Field Marshal Henry Maitland Wilson, 1st Baron Wilson,, also known as Jumbo Wilson, was a senior British Army officer of the 20th century. He saw active service in the Second Boer War and then during the First World War on the Somme and at Passchendaele. During the Second World War he served as General Officer Commanding-in-Chief (GOC-in-C) British Troops in Egypt, in which role he launched Operation Compass, attacking Italian forces with considerable success, in December 1940. He went on to be Military Governor of Cyrenaica in February 1941, commanding a Commonwealth expeditionary force to Greece in April 1941 and General Officer Commanding (GOC) British Forces in Palestine and Trans-Jordan in May 1941.
I Corps was an army corps in existence as an active formation in the British Army for most of the 80 years from its creation in the First World War until the end of the Cold War, longer than any other corps. It had a short-lived precursor during the Waterloo Campaign. It served as the operational component of the British Army of the Rhine during the Cold War, and was tasked with defending West Germany.
The Indian Army during World War II, a British force also referred to as the British Indian Army, began the war, in 1939, numbering just under 200,000 men. By the end of the war, it had become the largest volunteer army in history, rising to over 2.5 million men in August 1945. Serving in divisions of infantry, armour and a fledgling airborne force, they fought on three continents in Africa, Europe and Asia.
The 5th Infantry Division was a regular army infantry division of the British Army. It was established by Arthur Wellesley, 1st Duke of Wellington for service in the Peninsular War, as part of the Anglo-Portuguese Army, and was active for most of the period since, including the First World War and the Second World War and was disbanded soon after. The division was reformed in 1995 as an administrative division covering Wales and the English regions of West Midlands, East Midlands and East. Its headquarters were in Shrewsbury. It was disbanded on 1 April 2012.
The 8th Infantry Division was an infantry division of the British Army that was active in both the First and Second World Wars. The division was first formed in October 1914 during the First World War, initially consisting mainly of soldiers of the Regular Army and served on the Western Front throughout the war, sustaining many casualties, before disbandment in 1919. The division was reactivated in Palestine, under the command of Major-General Bernard Montgomery, in the late 1930s in the years running up to the Second World War before being disbanded in late February 1940. It was briefly reformed in Syria in an administrative role during 1942-3.
The II Corps was an army corps of the British Army formed in both the First World War and the Second World War. There had also been a short-lived II Corps during the Waterloo Campaign.
III Corps was an army corps of the British Army formed in both the First World War and the Second World War.
Middle East Command, later Middle East Land Forces, was a British Army Command established prior to the Second World War in Egypt. Its primary role was to command British land forces and co-ordinate with the relevant naval and air commands to defend British interests in the Middle East and eastern Mediterranean region.
I Corps was an Australian Army corps, one of three that were raised by the Army during World War II. It was the main Australian operational corps for much of the war. Various Australian and other Allied divisions came under its control at different times. In 1940–1942, the corps was based in the Mediterranean and Middle Eastern theatres, and controlled forces in action against the Germans, Italians and later the Vichy French in North Africa, Greece and Syria–Lebanon.
The 10th Armoured Division was an armoured formation of division-size of the British Army, raised during the Second World War and was active from 1941–1944 and after the war from 1956–1957. It was formed from the 1st Cavalry Division, a 1st Line Yeomanry unit of the Territorial Army (TA) which had previously been serving in Palestine. The division was converted from cavalry to armour and redesignated from 1 August 1941.
HQ Northern Ireland was the formation responsible for the British Army in and around Northern Ireland. It was established in 1922 and disbanded, replaced by a brigade-level Army Reserve formation, 38 (Irish) Brigade, in 2009.
13th Corps was a corps-sized formation of the British Army that fought on the Western Front during the First World War and was reformed for service during the Second World War, serving in the Mediterranean and Middle East throughout its service.
Lieutenant-General Sir William George Holmes was a senior British Army officer who fought with distinction in the First World War. He later served in the Second World War, where he commanded the 42nd Infantry Division during the Battle of France in May/June 1940.
The Trans-Jordan Frontier Force was formed on 1 April 1926, to replace the disbanded British Gendarmerie. It was a creation of the British High Commissioner for Palestine whose intention was that the Force should defend Trans-Jordan's northern and southern borders. The TJFF was also an Imperial Service regiment whose Imperial Service soldiers agreed to serve wherever required and not just within the borders of their own colony, protectorate or, in the case of the Transjordan, mandate. This was in contrast to the Arab Legion, which was seen more as an internal security militia, deriving from the troops of the Arab Revolt and closely associated with the Hashemite cause. The Amir Abdullah was an Honorary Colonel of the Trans-Jordan Frontier Force from its inception. However, the local commanders thought it unnecessary to form an additional force, believing that the expansion of The Arab Legion would be a better action.
XII Corps was an army corps of the British Army that fought in the First and Second World Wars. In the First World War, it formed part of the British Salonika Force on the Macedonian front. In the Second World War, it formed part of the British Second Army during Operation Overlord and the subsequent North-West Europe Campaign of 1944-46.
At the start of 1939, the British Army was, as it traditionally always had been, a small volunteer professional army. At the beginning of the Second World War on 1 September 1939, the British Army was small in comparison with those of its enemies, as it had been at the beginning of the First World War in 1914. It also quickly became evident that the initial structure and manpower of the British Army was woefully unprepared and ill-equipped for a war with multiple enemies on multiple fronts. During the early war years, mainly from 1940 to 1942, the British Army suffered defeat in almost every theatre of war in which it was deployed. But, from late 1942 onwards, starting with the Second Battle of El Alamein, the British Army's fortunes changed and it rarely suffered another defeat.
206th Independent Infantry Brigade was a Home Defence formation of the British Army during the Second World War.
The 207th Independent Infantry Brigade was a Home Defence formation of the British Army during the Second World War.
The British Troops in Palestine and Trans-jordan was a British Army command in Mandatory Palestine and the Emirate of Transjordan.
United Kingdom 
British Army