BL 7.2-inch howitzer Mk I-IV | |
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Type | Howitzer |
Place of origin | United Kingdom |
Service history | |
In service | 1940–1944 |
Wars | Second World War |
Production history | |
Designed | 1940 |
Produced | 1940–1944 |
Variants | Mk I, Mk II, Mk III & Mk IV |
Specifications | |
Mass | 10.22 long tons (10.38 t) |
Length | 24 ft 4 in (7.42 m) |
Barrel length | 14 ft 3 in (4.34 m) L/22.4 |
Width | 9 ft (2.7 m) |
Height | 4 ft 3 in (1.30 m) |
Crew | 10 |
Shell | HE |
Shell weight | 202 pounds (92 kg) |
Calibre | 7.2 inches (182.9 mm) |
Breech | Welin screw & asbury mech |
Carriage | Box trail |
Elevation | 0° to 45° |
Traverse | 4° left & right |
Rate of fire | 3 rpm under optimal conditions |
Muzzle velocity | 1,697 ft/s (517 m/s) |
Maximum firing range | 16,900 yd (15,500 m) |
References | Chris Bishop [1] [2] & Nigel Evans [3] |
BL 7.2-inch howitzer Mk 6 | |
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Service history | |
In service | 1944–early 1960s |
Wars | Second World War |
Production history | |
Designed | 1944 |
Produced | 1944–1945 |
Specifications | |
Mass | Traveling 17.5 long tons (17.8 t) in action 13 long tons (13 t) |
Length | 34 ft (10 m) |
Barrel length | 20 ft 8 in (6.30 m) L/33.1 |
Width | 8 ft (2.4 m) |
Height | 8 ft 3 in (2.51 m) |
Crew | 12 |
Carriage | Split trail |
Elevation | -1° to 63° |
Traverse | 30° left & right |
Muzzle velocity | 1,925 ft/s (587 m/s) |
Maximum firing range | 19,667 yd (17,984 m) |
References | Chris Bishop [1] [2] & Nigel Evans [3] |
The BL 7.2-inch howitzer was a heavy artillery piece used by the British Army throughout the Second World War.
In 1940 the British Army concluded that the only heavy howitzer available to it, the First World War-era BL 8-inch howitzer, had insufficient range for the conditions of the Second World War. As a stopgap the decision was made to re-line the barrels to a smaller calibre and develop a new range of ammunition to achieve the desired ranges. [1] [2] [4]
The 8-inch barrels were re-lined to 7.2 inches (183 mm) and the old carriages were retained although the original steel rimmed wheels were replaced with new pneumatic balloon-tyre wheels, as was consistent with the motorisation of the British Army. The new four-charge ammunition increased the range to 16,900 yd (15,500 m), but when fired at full charge the recoil caused the weapon to rear violently and jump backwards. To help counter this, two wedge shaped ramps were placed behind the wheels although the gun could sometimes still jump over them, presenting a hazard to crews. Marks I–IV differed only in the original 8-inch barrel used and the type of conversion; some barrels and carriages were also supplied from US First World War stocks. [1] [2] [5]
In 1944 several 7.2-inch barrels were placed in the US Carriage M1 used by the 155 mm Long Tom already in use by the British Army, becoming the BL 7.2-inch howitzer Mk V. Few Mk Vs were produced and it was never issued to batteries, as it was apparent that the Carriage M1 was capable of accepting greater recoil forces. [1] [2]
The BL 7.2-inch howitzer Mk 6 (there was a shift from Roman numerals) retained the Carriage M1 of the Mk V but had a new 7.2-inch 6 ft 5 in (1.96 m) longer barrel than previous marks and a fifth charge was added to the ammunition. The longer barrel and extra charge provided an increase in range to 19,600 yd (17,900 m) and the new carriage also provided a far more stable platform, greatly increasing accuracy. [6] The Mk 6 was considered a highly effective gun and it was retained in service after the war. [1] [2]
The original marks performed well. The first 7.2-inch howitzers were issued to batteries from mid-1942 and used in action in North Africa and in 1944 following the Normandy landings. In Burma they were provided as a pool of two guns per corps and used by Regiments as required. By the end of 1944, most of the earlier marks had been replaced by the Mk 6. [1] [2] The usual gun tractor for the 7.2-inch howitzer in the early war years was the Scammell Pioneer, although this was never available in sufficient numbers and from late 1943 the Pioneer was supplemented by the Albion CX22S. [7] The BL 7.2-inch howitzer was usually employed in two four-gun batteries (alongside two four-gun batteries equipped with the 155 mm Long Tom) of "Heavy" regiments of Army Group Royal Artillery (AGRA) units, providing heavy fire support for British and Commonwealth troops. The Mk 6 remained in British Army service until the early 1960s. [2] [3] [8]
In 1957, Indian Army raised 60 Heavy Regiment from the erstwhile J&K Bodyguard Cavalry. The unit was unique in its composition of four batteries with four Mk 6 BL 7.2-inch Howitzers in each battery, unlike the standard three-battery (six guns each) composition of other Indian artillery regiments. The guns of 60 Heavy Regiment saw combat in the 1965 and 1971 wars against Pakistan. In the early 1990s 60 Heavy Regiment was converted to a field regiment and the guns were passed on to 61 Heavy Regiment. They were finally retired from service by the late 1990s.
The Ordnance BL 60-pounder was a British 5 inch (127 mm) heavy field gun designed in 1903–05 to provide a new capability that had been partially met by the interim QF 4.7 inch Gun. It was designed for both horse draft and mechanical traction and served throughout the First World War in the main theatres. It remained in service with British and Commonwealth forces in the inter-war period and in frontline service with British and South African batteries until 1942 being superseded by the BL 4.5 inch Medium Gun.
The BL 5.5-inch gun was a British artillery gun introduced during the middle of the Second World War to equip medium batteries.
The BL 4.5 inch medium gun was a British gun used by field artillery in the Second World War for counter-battery fire. Developed as a replacement for the BL 60-pounder gun it used the same carriage as the BL 5.5-inch medium gun but fired a lighter round further.
The QF 3.7-inch AA was Britain's primary heavy anti-aircraft gun during World War II. It was roughly the equivalent of the German Flak 8.8 cm and American 90 mm, but with a slightly larger calibre of 3.7 inches, approximately 94 mm. Production began in 1937 and it was used throughout World War II in all theatres except the Eastern Front. It remained in use after the war until AA guns were replaced by guided missiles beginning in 1957.
The BL 8-inch howitzer Marks VI, VII and VIII were a series of British artillery siege howitzers on mobile carriages of a new design introduced in World War I. They were designed by Vickers in Britain and produced by all four British artillery manufacturers but mainly by Armstrong and one American company. They were the equivalents of the German 21 cm Morser 16 and in British service were used similarly to the BL 9.2-inch howitzer but were quicker to manufacture and more mobile. They delivered a 200 lb (91 kg) shell to 12,300 yd. They had limited service in the British Army in World War II before being converted to the new 7.2 in (180 mm) calibre. They also equipped a small number of Australian and Canadian batteries in World War I and by the US Army in that war. They were used in small numbers by other European armies.
The Ordnance BL 6 inch 30cwt howitzer was a British medium howitzer used in the Second Boer War and early in World War I. The qualifier "30cwt" refers to the weight of the barrel and breech together which weighed 30 hundredweight (cwt) : 30 × 112 lb = 3,360 lb. It can be identified by the slightly flared shape of the muzzle and large recuperator springs below the barrel.
The Ordnance BL 9.2-inch howitzer was a heavy siege howitzer that formed the principal counter-battery equipment of British forces in France in World War I. It equipped a substantial number of siege batteries of the Royal Garrison Artillery. During World War II a limited number were used in the Battle of France, with the remainder being kept in the United Kingdom.
The British BL 6-inch gun Mk XIX was introduced in 1916 as a lighter and longer-range field gun replacement for the obsolescent BL 6-inch gun Mk VII.
52nd (London) Heavy Anti-Aircraft Regiment was a volunteer air defence unit of Britain's Territorial Army from 1922 until 1961. In World War II it defended London during The Blitz and later served in the Burma Campaign.
The IV Home Counties (Howitzer) Brigade, Royal Field Artillery was a new volunteer unit formed in Kent as part of the Territorial Force (TF) in 1908. It saw active service on the Western Front during World War I and was reconstituted as medium artillery in the interwar years. Later it converted to anti-aircraft artillery, in which role it served in The Blitz, North Africa and Italy during World War II and continued under various designations until its disbandment in 1969.
The 1st Devonshire Artillery Volunteers and its successor units served in the British Army's Reserve Forces from 1859 to 1961. During World War I it carried out garrison duty in British India but went on to see active service in the Third Anglo-Afghan War. Converting to an air defence role before World War II its units participated in the Norwegian campaign and the Dunkirk evacuation, the Battle of Britain and then the campaigns in North Africa, Italy, and Burma
The 1st Kent Artillery Volunteers was a part-time unit of the British Army's Royal Artillery from 1860 to 1956. Primarily serving as coastal artillery defending the Port of Dover and other harbours in South-East England, the unit's successors also served in the heavy artillery role on the Western Front during World War I and as anti-aircraft artillery during the Blitz and later in the North African and Italian campaigns of World War II.
248th (Welwyn) Heavy Anti-Aircraft Battery, Royal Artillery, was an air defence unit of Britain's Territorial Army (TA). Formed just before the Second World War, it fought in the Battle of France and the Swansea Blitz, and later defended London and Cyprus. It continued serving in the post-war TA until 1955.
120th Heavy Anti-Aircraft Regiment, Royal Artillery was an air defence unit of the British Army during World War II. Raised in early 1941, it served to protect South Wales and London before proceeding overseas in 1943. It provided anti-aircraft (AA) cover over Cyprus until its disbandment in 1944.
85th (Tees) Heavy Anti-Aircraft Regiment, Royal Artillery was a part-time unit of Britain's Territorial Army (TA) formed from forces around the river Tees just before the outbreak of World War II. Its service during the war included the Battle of France and Dunkirk evacuation, the Battle of Britain and Blitz, and the North African and Italian campaigns. It continued to serve in the air defence role until 1961.
The 101st Heavy Anti-Aircraft Regiment, Royal Artillery was an air defence unit of Britain's Territorial Army raised in northern Scotland just before World War II. After defending the naval base of Scapa Flow against air attack in the early part of the war, the regiment went to India and later took part in the Burma Campaign in the anti-aircraft role and with heavy howitzers in support of ground forces, even on occasion fighting as infantry. It was reformed in the post-war TA and continued until the abolition of Anti-Aircraft Command in 1955.
The South Midland (Warwickshire) Royal Garrison Artillery was a volunteer artillery unit of Britain's Territorial Force formed in 1908. It served in Home Defence and provided heavy artillery support to the armies on the Western Front and Italian Front in World War I. In the interwar years it became 204 (Warwickshire) Battery serving in various regiments and formations before being expanded into a full regiment. In World War II it served in the heavy anti-aircraft (HAA) role defending its home area of the West Midlands against German air attack, and then defended Calcutta against Japanese attacks. It continued in the postwar Territorial Army until 1955.
The 4th North Midland Brigade, sometimes known as the 'Derbyshire Howitzers', was a part-time unit of Britain's Royal Field Artillery created in 1908 as part of the Territorial Force. It served on the Western Front in the First World War. Reorganised between the wars, it was later converted to the anti-aircraft (AA) role. During the Second World War, part of the regiment served in the Siege of Malta but the rest was captured at the Fall of Tobruk. The reconstituted regiment served on in Anti-Aircraft Command until 1955 and as a unit of the Royal Engineers until 1967.
10th Heavy Anti-Aircraft Regiment, Royal Artillery was an air defence unit of the British Army that served in the Mediterranean Theatre during World War II. Having been formed in Gibraltar early in the war, it moved to Malta where it defended the island during the Siege of 1940–43.
191st Heavy Anti-Aircraft Battery, Royal Artillery, was an air defence unit of Britain's Territorial Army formed in Birmingham before World War II. It defended the West Midlands against attack during the Battle of Britain, and was then shipped to Malta, where it served through most of the long siege when the island fortress was bombed incessantly.