| 100th Anti-Aircraft Brigade | |
|---|---|
| Active | Apr 1943 − Feb 1946 |
| Country | |
| Branch | |
| Type | Anti-aircraft brigade |
| Role |
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| Part of | |
| Engagements | |
| Commanders | |
| Notable commanders |
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The 100th Anti-Aircraft Brigade (100th AA Bde) was an air defence formation of the British Army during the Second World War. Formed in April 1943 the brigade was one of two mobile anti-aircraft brigades allocated to the Second Army for the campaign in North-West Europe. The brigade began landing in Normandy on 14 June 1944 and operated at or close to the front line of the Second Army during the campaign in North-West Europe, covering British forces during river crossings, Operation Market Garden and the advance into Germany in 1945. Although primarily an anti-aircraft unit, in common with other anti-aircraft brigades the unit took on anti-tank, river, ground and bridge defence, as well as laying smokescreens and providing fire support. At the cessation of hostilities the brigade moved to the Harburg area of Hamburg, where it took on occupational duties. The brigade disbanded in February 1946. [1] [2] [3] [4]
The brigade formed in April 1943, initially sharing 74th AA BDE headquarters in Cliftonville, near Margate in Kent. It was to be commanded by new Brigadier Edward Neufville Crosse MC, a veteran of the First World War who had served with the Royal Artillery since 1915. Its initial strength consisted of 90th Heavy Anti-Aircraft Regiment (90th HAA Rgt), 107th HAA Rgt, 113th Light Anti-Aircraft Regiment (113th LAA Rgt), and 123rd LAA Rgt. [2]
In May 1943 the brigade relocated to Blandford Camp, near Blandford Forum in Dorset, where it remained until November for training in gunnery, searchlight operation and in radar operation. Trials were conducted with different types of Window to establish their respective effectiveness as a countermeasure against the radars in use by the brigade. The 1943 war diaries show that the brigade's regiments were occasionally involved in active air defence duties, but these were typically conducted under the command of other brigades. [2]
In October 1943, the brigade conducted "Exercise Lobster" to rehearse the processes of embarkation, disembarkation and deployment, followed by "Exercise Shrimp" in January 1944 rehearsing the breakout from a beachhead. During this period brigade headquarters relocated again to The Lindens in Cliftonville, Northamptonshire, where its HQ remained until its deployment in June 1944. [2]
The first units of the brigade to land in Normandy did so on D-Day +8, 14 June. The 405th and 409th batteries of 123rd LAA Rgt came under the operational command of 80th AA Brigade, which had landed with the Juno beach assault waves on 6 June and taken up positions on the beachhead, prior to 100th AA Bde landing its HQ. [5] The batteries were attacked from the air while unloading men and equipment onto two rhino ferries, with one man killed, 37 wounded and several guns and tractors destroyed. [6] Lance Bombardier Henry Witts and Sergeant William Vernon were both awarded the Military Medal for their actions in the aftermath of this attack. [7] [8] [9] [10] The 100th AA Bde HQ landed a few days later, on 17 and 18 June, and established itself in Colombiers-sur-Seulles. [6] The remainder of the brigade, consisting initially of 60th HAA Rgt and 113th LAA Rgt, along with 151st Anti-Aircraft Operations Room (AAOR) and the 557th Searchlight Battery (SL Bty), arrived through June and July, entering into secondments with other brigades while allied forces struggled to break out of the beachhead. [5]
The 100th AA Bde's first major tasking came on 25 July, when it became operationally responsible for the air defence of Caen, [11] which had been captured a few days prior after an unexpectedly protracted battle. The deployment was uneventful, as air attacks were light after the front line moved eastwards and concentrated around Falaise. [12] 1st Canadian Army took over defence of the city on 12 August. [13]
The allied break-out following the closing of the Falaise Pocket on 21 August led to a rapid succession of short-lived deployments for the brigade, [14] by which point it had expanded to include 107th HAA Rgt and 71st LAA Rgt. [13] On 24 August orders were received to prepare to move in support of the British crossing of the River Seine at Vernon bridge, and the brigade took position there on 26 August. [13] Deployments at Amiens, Arras and Antwerp followed in support of XXX Corps' advance, with the latter reached on 4 September. The 106th AA Bde took over defence of the city two days later. [15]
The 100th Anti-Aircraft Brigade had been operating in a dual anti-air and anti-tank ground role throughout the advance, in common with the other leading anti-aircraft brigades, [16] but the ground element of their role was significantly expanded on 9 September. The divergence of the advances of British XXX Corps and US XIX Corps had left a 25-mile gap on the right flank of 11th Armoured Division, leaving the lines of communication vulnerable to German counterattack which, based on intelligence reports, was being threatened by a large German armoured concentration believed at the time to comprise elements of II SS Panzer Corps. [17] Operation Crosseforce was established, under operational instruction number 4. To 123rd LAA Rgt and 165 HAA Rgt were added 86th Field Regiment, Royal Artillery, 73rd Anti-Tank Regiment, the Royal Netherlands Brigade, one troop of the 13th/18th Royal Hussars and a company of the King's Royal Rifle Corps, forming a composite force for anti-tank and ground defence. [18]
Defensive positions were established on a line centred at Beringen, with positions as far west as Geel and as far east as Helchteren. Brigade HQ itself was established at Leopoldsburg. In the event, no counterattack materialised and after six days the situation improved sufficiently for the brigade to be returned to regular duties. [18] The action was important enough, though, to be mentioned in the citation for commander Brigadier Crosse's CBE nomination, which he received in October. [19]
On the same day Operation Crosseforce concluded, the brigade received its orders for Operation Market Garden. It was to provide anti-aircraft defence for the advance of XXX Corps and the bridges over the River Waal once captured, and anti-motor torpedo boat defence. The 165th HAA Rgt and 123rd LAA Rgt would cover Nijmegen, 113th LAA Rgt would cover Arnhem, and 27th LAA Rgt, under operational command of 100th AA Bde for the operation, would cover Grave, each with an accompanying searchlight battery. Detachments from the 27th LAA Rgt would also cover Veghel and Son. [20]
The brigade was divided into four elements for the advance. Two sections each of the 165th HAA Rgt and 123rd LAA Rgt, along with searchlights, would advance first behind 32nd Guards Infantry Brigade, with a recce party from brigade HQ. This group began their advance on 18 September 1944. The main body, consisting of the remainder of the 165th HAA Rgt and 123rd LAA Rgt, as well as brigade HQ and 151st AAOR, followed on two days later. The third group of the 113th LAA Rgt moved on 21 September, and the final group consisting of regimental support vehicles followed them. [20]
The advance party only covered two miles on the first day, but despite coming under aerial attacks at both Joe's Bridge and Grave bridge reached Nijmegen on 20 September. After the capture of the bridge on 21 September, sections from the 123rd LAA Rgt and 165th HAA Rgt took on air defence and river defence duties there as planned. [21]
At the same time, the main body had continued its advance up "Hell's Highway" and reached Eindhoven on 21 September. The column was frozen several times with nose-to-tail traffic and having to allow other units to pass. The 100th AA Bde alone had nearly 700 vehicles in its convoy, with 255 of those travelling with the main body. The 113th LAA Rgt spent the night at Valkenswaard, only a few miles behind. [22] [23]
In the early hours of the following morning, 22 September, the brigade's main body reached Veghel and was ordered to halt to allow 69th Infantry Brigade to pass. The 123rd LAA Rgt was in front, half a mile north of the town, with brigade HQ following and 165th HAA Rgt in the rear, within and to the south of the town. [24]
Veghel had been a primary objective of the US 101st Airborne Division, as a key point on the main supply route of XXX Corps. [25] The 2nd Battalion, 501st Parachute Infantry Regiment (2/501 PIR) was holding Veghel, [26] and General McAuliffe was in the town that morning. [27] American paratroopers were positioned on the road adjacent to the 123rd LAA Rgt. Mid-morning, information was received of a concentration of enemy tanks and infantry on the right flank, [28] later known to be Kampfgruppe Walther with tanks from the 107th Panzer Brigade and an SS panzergrenadier battalion. [29] The brigade was not, and could not have been, aware that it was about to become heavily engaged in what has since become known as "Black Friday" — the third, and according to Saunders probably the most significant, interruption of XXX Corps' supply line during Operation Market Garden. [29] [27] [26]
At 1130 sustained small arms fire began, along with shelling of the town. The 123rd LAA Rgt enacted plans that it had drawn up earlier in the case of engagement, [30] with E Troop of 408th Battery under the command of Lieutenant Milum moving north along the road with their guns and a Bren gun party commanded by the Regimental Sergeant Major (RSM), Warrant Officer W.V Hutchinson, to disperse the column's vehicles and provide anti-tank defence. The remainder of E Troop formed up behind regimental HQ. A Bofors 40 mm gun and PIAT were also positioned to defend approaches to the column. [31]
The column came under fire, and tanks were heard in the woods. US airborne troops withdrew through the regimental HQ position to an anti-tank screen on the edge of town, and due to the "smallness of numbers and equipment available" the British position became untenable. [30]
While preparing to withdraw, tanks broke through onto the road, both on the right and left flanks, "much to the surprise of everyone concerned." [31] The tanks proceeded along the road "knocking out and setting fire to vehicles on the way, and spraying the hedges with machine gun fire". [30] The regiment, excluding the now cut off men of E Troop, conducted a fighting withdrawal, which was not done without casualties. [30] A storeman and clerk from HQ successfully destroyed a Panzer IV at point-blank range with their PIAT, [24] and a second tank was destroyed by American anti-tank guns. [30]
Two men in a ditch on the far side of the road had been wounded by the second tank, and a party under the command of Lieutenant Hirsch, a non-combatant attached to the 123rd LAA Rgt from the Belgian Military Mission, began to drag them away. [30] The withdrawing troops became pinned down by small arms fire and, without orders, Hirsch manned a Bren gun and occupied enemy infantry long enough for regimental HQ to disengage and withdraw to the line of US troops. Hirsch and a gunner stayed in no-mans-land with the second wounded man — Lieutenant Jordan — until the attack subsided and they could safely make their way back to town. He was awarded a Military Cross for his actions. [32]
At the head of the column, the detachment from E Troop had also been heavily engaged. A combination of fire from Bofors 40mm and PIAT left one attacking tank burning, but heavy machine gun fire and close infantry engagement caused many casualties amongst the detachment closest to town, where the German forces had broken through. Now obviously cut off, the remainder of E Troop attempted to withdraw to the north, but on rounding a bend came face-to-face with three more Panzer IV tanks. Surrounded, Lt Milum and Sergeant Brunning attempted to effect a retreat to Veghel. [31]
Nearly all of the men were loaded onto a Royal Army Service Corps (RASC) lorry with Sgt Brunning, while Lt Milum and three men hooked one of the AA guns to a jeep in an attempt to salvage it. The makeshift convoy had nearly reached the head of the line of HQ vehicles when it was hit by automatic fire from the side of the road. Lt Milum was wounded on the bonnet of the jeep, and the gunner – Lance Bombardier Schofield – was killed, but Gunner Cummings driving the vehicle managed to get it back to town, where he tended the wounds of Lt Milum and another man for an hour until an American medical party came to their aid. [31]
The RASC lorry had crashed into a ditch, though, with the death of four men and the wounding of several others. Sgt Brunning evacuated the lightly wounded men from the lorry to a nearby house, where an RAF crew that had crashed the day before was also sheltering, then returned to the men who could not move and set about tending their wounds. He remained with them by the lorry until darkness fell, before carrying them one-by-one back to the house. Surrounded and cut off, the group held on at the house until relieved the following morning by the 32nd Guards Infantry Brigade. [31] Sgt Brunning was awarded a Military Medal for his actions. [33] [34]
At around the same time that the 123rd LAA Rgt was engaged at the head of the column, brigade HQ was liaising with 101st Airborne commanders. 165th HAA Rgt received orders to deploy two of its guns from 198th Battery in an anti-tank role, and two further guns from 275th Battery for anticipated fire support to the east of Veghel. Personnel from brigade HQ and 151st Anti-Air Operations Room formed up as infantry into defensive positions. [35] Troops from 275th and 317th batteries of the 165th HAA Rgt were given orders to move as infantry support for four tanks of the 44th Royal Tank Regiment, which had speedily redeployed from Schijndel, [29] to do a slow sweep of the area, despite the misgivings of Lieutenant Hudson from the 275th, who was to lead one group:
I was ordered by Captain Balkwill to hold his right flank in an attack upon the enemy...The order for this attack came from a Major of the Recce Corps (Royal Dragoons) whose 2 I/C for the operation was an American Captain. I spoke to this USA officer and pointed out to him that we were an HAA unit improperly equipped for infantry commands. He was already aware of this and stated every available man was required until the man US forces arrived. [36]
The four tanks began their sweep at 1230, with the infantry moving up in support. While the tanks moved into a nearby village, the infantry — in open ground adjacent to the village — came under sustained heavy machine gun fire from a large German patrol. Under covering fire, Lt Hudson moved left into the village to seek the assistance of one of the tanks and Captain Balkwill. The commander of one tank agreed to come to the infantry's aid but had to undertake a large detour in order to do so, and Hudson returned with Lieutenant Lymer and men of the 317th in support. They became engaged in a running battle with German infantry crossing the position, delaying their return. By the time Hudson returned to his section's position, the troops had withdrawn to the road. [36]
Troops of the 317th had also pulled back under heavy small arms fire after sustaining casualties, with Sergeant Francis Henwood awarded a Military Medal for his coolness and courage in extracting his men from a dangerous position where they might all have been lost, after Captain Balkwill and four others had been killed. [37] In a little over two hours six men had been killed and eight were missing, [35] but the operation was reported as a successful holding and deterrent action, [36] allowing reinforcements time to arrive and prevent the capture of the critical Veghel bridges. [29]
In the meantime, the guns deployed both from the 198th and 275th batteries were in action firing airburst shells against enemy infantry and counter-battery fire against artillery positions shelling Veghel, as well as armour-piercing shells against enemy tanks moving along the canal. [35]
As the engagement had not been anticipated, the batteries had no ready ammunition supply, which remained in the convoy vehicles. Lance Sergeant Alvin Leaver of the 165th HAA Rgt took a Jeep and made three trips under continuous small arms fire to vehicles further back in the convoy to bring ammunition back to the guns. Having set up an artillery plotting board under mortar fire, he then, on his own initiative, made contact with one of the tank commanders to arrange fire support, as the brigade had no relevant maps for the area. The Major commanding the British tanks later reported that this fire had destroyed an enemy tank, [38] and German accounts reported the delaying impact of this fire on their infantry. [29] L/Sgt Leaver was awarded a Military Medal for his actions. [39]
This action continued throughout the afternoon, as reinforcements arrived from American airborne units in the area. A battery from 81st Airborne Anti-Aircraft Battalion, 2nd Battalion, 506th Parachute Infantry Regiment and 3rd Battalion, 327th Glider Infantry Regiment redeployed to defend the town, and combined with significant additional artillery support and rocket fire from RAF Hawker Typhoons, the attack was slowed and halted only 1,000 metres from the target bridges. [29] [27] The final action of the brigade came in the early hours of the 23 September, when a Bren gun detachment of the 198th Battery captured two German soldiers carrying demolition charges in an attempt to destroy one of the Veghel bridges. [24]
On the following day a combined effort of US 101st Airborne Division troops from Veghel advancing north and the British 32nd Guards Infantry Brigade attacking south from Nijmegen reopened the road, but not without hard fighting, and not until the early afternoon. [26] [29] The 100th AA Bde then continued its advance to Nijmegen, with the main party reaching its objective in the early hours of 24 September. [40]
On arrival, the brigade immediately deployed its regiments to defend the key river crossings and bridges around Nijmegen. 27th LAA Rgt deployed in defence of Grave bridge and a bridge over the Maas-Waal Canal. 123rd LAA Rgt and 165th HAA Rgt, along with searchlights from 474 SL Bty and 557 SL Bty, deployed in defence of the main road, rail and pontoon bridges over the River Waal, both in a river and air defence role. 113th LAA Rgt arrived later that afternoon, but with its original objective of Arnhem uncaptured only deployed one battery initially, in an anti-aircraft role. [40]
The brigade had been heavily involved in the fighting at Veghel, but paid a heavy price. 15 men had been killed and a further 34 wounded, [24] with E Troop so badly affected that it was unable to deploy at Nijmegen. [30] 8 men captured from the 165th HAA Rgt and 151st AAOR during the battle had managed to escape captivity and return to their units, but another 11 were still missing. [24] That included the RSM, Warrant Officer Hutchinson, who became a prisoner of war. [41]
Significant aerial activity was recorded over and around the bridges in the following days and weeks, as Operation Market Garden transitioned into the Battle of the Nijmegen salient. The Luftwaffe had been ordered to target the bridges with every available bomber, and Hitler demanded that his headquarters be called immediately after attacks to inform them of success or failure. [42] 117 German aircraft attacked the area around the bridges on the 25 September, including a single raid of 100 aircraft, and further large-scale raids followed on 27 and 28 September. [43] [44] As well as conventional and jet aircraft, the Germans also employed 'composite' or 'piggyback' bombers, though these were inaccurate and never hit the bridges. [42] Reinforcements arrived on 27 September in the form of 107th HAA Rgt and the remainder of 113th LAA Rgt. [45] Continuous action over 10 days resulted in 17 aircraft destroyed, with only slight damage to the bridges from the air. [46] [47]
While these raids failed to do significant damage to the bridges, German shelling continued to cause casualties amongst the deployed troops. Lieutenant Hugo O'Neill of the 165th HAA Rgt was awarded a Military Cross for his actions on 25 and 26 September, relocating his battery's guns by day, despite being under observation and constant attack, after shell fire killed five men and wounded four others. [48] [49]
The most successful attacks against the bridges were riverborne. An attack by 12 frogmen on 28 September succeeded in destroying the railway bridge and damaging the road bridge, [50] but a spirited defence and difficulty in handling the unwieldy explosives kept the road bridge operational. [51] Ten of the twelve were captured, three of whom died from wounds. [52] The threat of frogmen was a recurring one, with several killed or captured over the next two months of action. Floating mines were also a threat, launched up-river in groups of up to twelve to drift downstream with the intent of detonating on contact with the bridges. To protect against this, a boom was laid across the river with searchlights mounted on it to continuously illuminate the surface of the water. [53] [54]
No further damage was recorded to the bridges, but to bolster the defences further reinforcements were added to the roster of the 100th AA Bde in the shape of 90th HAA Rgt, 112th LAA Rgt, 321st LAA Bty of the 93rd LAA Rgt, as well as anti-tank guns, mortars and two infantry companies. [47] Ten further aircraft were shot down during October, [47] and the brigade was kept busy with further defence against swimmers and mines, fire support missions, laying of smoke screens and provision of artificial moonlight. [54]
On 10 November, after 7 weeks of nearly constant action, the 100th AA Bde was relieved of its duties at Nijmegen by the 74th AA Bde. [55]
The brigade redeployed and took on a number of duties in defence of towns and airfields adjacent to Eindhoven - Weert, Helmond and Deurne. A busy autumn for the brigade was followed by a lower tempo winter. The brigade's December war diary recorded activities in support of VIII and XII Corps, including bridge and air defence duties, but for the first time since Normandy some days reported only the weather. Various elements of the brigade went on training courses, or leave. Despite this, during November and December nine aircraft were damaged by the brigade and two destroyed, including the shooting down of an Me 262 over Helmond airfield, a kill shared with the RAF Regiment. [55] [56] [57]
By the end of 1944, brigade records showed that, at its largest, twenty sub-units and more than 9,000 men came under its command. [58] It had destroyed 68 enemy aircraft and damaged a further 46 during 550 engagements, firing 6,230 heavy anti-aircraft rounds and 65,220 light anti-aircraft rounds, for a recorded ratio of one aircraft destroyed for every 92 heavy and 959 light anti-aircraft rounds fired. In the ground role, the brigade fired 62,155 rounds of 3.7-inch ammunition, captured 92 prisoners, and destroyed two enemy tanks, with a possible third also credited, during the fighting at Veghel. These operations were conducted at a cost of 70 men killed, 262 wounded, and 21 missing. [58]
1 January 1945 saw the only big raid that the brigade dealt with during its three-month deployment around Weert. 300 enemy aircraft were involved in general attacks on airfields, and 30–50 were observed over Helmond and Deurne. The brigade claimed 8 aircraft destroyed that day. Its total for January was 10, with a further 16 damaged across the three-month period. [59]
The 100th AA Bde had limited involvement in the initial stages of February 1945's Operation Veritable and Operation Grenade, the British crossing of the River Maas and American crossing of the River Roer respectively. The 90th HAA Rgt conducted fire missions in support of both British and American troops, and 113th LAA Rgt moved one battery, 368th, to Gennep in defence of the crossing there. They were supported by elements of 474th SL Bty, 151st AAOR and 63rd Anti-Tank Rgt. [60] In early March, the LAA regiments of the brigade took on a larger role in the latter stages of Operation Veritable, taking over the air defence of Venlo, Lottum, Well and Gennep along the banks of the Maas river. [61] There were sporadic raids by fighters and night bombing, [62] but the war diary does not record significant action. [61]
Brigadier Crosse left the brigade on 7 March 1945, to take on a role as Commander, Royal Artillery, 49th (West Riding) Division, which was to finish the liberation of the Netherlands while the bulk of Allied forces headed east into Germany. Brigadier Mark Buller Turner, DSO, who had commanded 60th HAA Rgt since landing in Normandy, would lead the brigade for the final few months and the advance across the Rhine. [61] [63]
Less than a week after the change in command, the brigade moved forwards to prepare for Operation Plunder and the crossing of the River Rhine. [61] The 100th AA Bde was freed of its existing commitments to support XII Corps, while 106th AA Bde would do the same for XXX Corps. [64] 100th AA Bde would command 90th HAA Rgt, 108th HAA Rgt, 113th LAA Rgt and 123rd LAA Rgt, 322nd Bty of 93rd LAA Rgt, as well as searchlights, radar and 151st AAOR, and once again it would provide air, river and ground defence. [65] The brigade moved to the Xanten area, ready to defend the bridge and crossing points there. [66]
Preparation for the operation was extensive. Ammunition dumping took place over two weeks, and due to the relatively flat terrain of the region, guns had to be moved up, dug in and concealed at night. [67] Fire support missions began on 23 March, and Routledge notes that there are doubts as to whether the ammunition expenditure was justified. [68] The 90th HAA Rgt fired 4,575 rounds in the night before the crossings were made, and 108th HAA Rgt fired 7,079, before taking part in a 30-minute anti-flak bombardment the following morning. [68] The combined 11,654 rounds fired in a single night was nearly a fifth of the reported expenditure of the 100th AA Bde in 1944. [58]
Air attacks on the 100th AA Bde positions were fewer than those experienced by their counterparts in the 106th AA Bde, [69] but the war diary notes that overnight on the 24/25 March 28 mines, in groups of up to 8, were floated down the river. The experiences at Nijmegen had paid off and all were destroyed through a combination of searchlight tracking and both anti-aircraft and machine gun fire. [61] Sporadic attacks by aircraft did occur, though, and by the end of March the brigade had confirmed 9 aircraft destroyed. [61]
Following Operation Plunder, attention turned to the occupation of Germany. [70] The brigade's HAA regiments were put onto battlefield clearance and transport duties after commanders judged that only LAA defence of the Rhine crossings was necessary, with the expectation that the HAA units be ready to deploy with notice if needed. [71] [72] The LAA units remained in defence of Rhine crossings at Xanten and Rees and for the first weeks of April there was relatively little air activity reported by the brigade, though Routledge reports that the 100th AA Bde was active in supporting the crossing of the River Weser by VIII and XII Corps between 9–11 April. [71] [73] The brigade's war diary does not record involvement in this operation. [71]
The 113th LAA Rgt was again detached and ordered to move to the newly liberated Bergen-Belsen concentration camp. This it did on 17 April, [71] arriving at Bergen-Belsen 238 miles away in 22 hours. [74] The regiment, and other men of the 100th AA Bde, were moved enough by the experience to produce a booklet containing photos, facts and a timeline of the duties carried out, written by Captain Andrew Pares. [74] A copy is contained within Brigadier Crosse's private papers, shared with him by 113th's CO, Lt Col Mather. [74] On completion of its duties, 113th LAA Rgt joined the 103rd AA Brigade. [71]
On 24 April the brigade received orders that it was to support VIII and XII Corps in Operation Enterprise, the crossing of the River Elbe. With its regiments engaged on other tasks, 100th AA Bde was reinforced by units of the 106th AA Bde, taking onto strength 165th HAA Rgt, 71st LAA Rgt and 109th LAA Rgt, as well as elements of 121st LAA Rgt, 63rd Anti-Tank Regiment and searchlight units. Operation Enterprise launched on 29 April, with the Luftwaffe making significant attacks against the river crossings, with little success. The brigade claimed four aircraft destroyed, [75] taking their total for April to seven. [71] A further 3 were confirmed destroyed in early May, taking the brigade's total to 97 for the campaign. [76]
After the cessation of hostilities, 100th AA Bde reverted to occupational duties in the vicinity of Harburg, Hamburg, [77] [76] though its primary deployment in the immediate post-war period was some 50 miles south at the POW processing camp at Munsterlager. [76] A long-desired brigade rest centre, "100 Club", opened at the beginning of July 1945 in the area of Cranz, Hamburg, [78] after first being mentioned in January. [79]
With no airborne threat to face, the regiments of the brigade gradually gave in their guns, starting with 107th HAA Rgt in June. [80] With no guns to maintain, the REME workshops also closed, and as the structure of the British Army of the Rhine (BAOR) became clearer, more regiments shuffled into other units. The brigade finally disbanded in February 1946. [81]
The brigade's composition varied throughout the campaign as regiments and batteries were attached or detached according to operational needs. The table below summarises the principal named units under command during selected key periods. [82] [3] [4]
| Period | Heavy Anti-Aircraft Regiments | Light Anti-Aircraft Regiments | Other Notable Units | Notes |
|---|---|---|---|---|
| Formation (April 1943) | 90th HAA Rgt 107th HAA Rgt | 123rd LAA Rgt | – | [2] [3] |
| Operation Overlord | 60th HAA Rgt 107th HAA Rgt* | 113th LAA Rgt 123rd LAA Rgt 71st LAA Rgt* | 151st AAOR 557th SL Bty | [3] In support of Second Army 6 LAA Rgt in support for barrages 107th HAA and 71st LAA added to strength in Aug. |
| Operation Crosseforce | 165th HAA Rgt | 27th LAA Rgt 71st LAA Rgt 123rd LAA Rgt | 73rd Anti-Tank Rgt 13th/18th Royal Hussars (one troop) Royal Netherlands Brigade | [3] In support of XXX Corps 86th Field Rgt in support |
| Operation Market Garden (September 1944) | 165th HAA Rgt | 113th LAA Rgt 123rd LAA Rgt 27th LAA Rgt | 474th SL Bty 557th SL Bty 151st AAOR | [3] In support of XXX Corps |
| Nijmegen (September–November 1944) | 165th HAA Rgt 90th HAA Rgt* 107th HAA Rgt* | 112th LAA Rgt 113th LAA Rgt 123rd LAA Rgt 321st Bty, 93rd LAA Rgt | 344th SL Bty 356th SL Bty 474th SL Bty 151st AAOR 810th Pnr Smoke Coy | [3] Anti-tank guns, mortars, two infantry companies in support 165th HAA replaced by 90th HAA in Oct |
| Operation Plunder (Rhine crossing) (March 1945) | 90th HAA Rgt 108th HAA Rgt | 113th LAA Rgt 123rd LAA Rgt 322nd Bty, 93rd LAA Rgt 2nd Indep. LAA/SL Bty | 474th SL Bty 806th Smoke Coy 151st AAOR 100th Radar Bty | [4] In support of XII Corps 324th Coy RASC |
| Operation Enterprise (Elbe crossing) (April–May 1945) | 165th HAA Rgt | 71st LAA Rgt 109th LAA Rgt 2nd Indep. LAA/SL Bty Elements of 18th, 58th and 121st LAA Rgts | 63rd A Tk Rgt | [4] In support of VIII and XII Corps 20 Canal Defence Lights in support |