The British Expeditionary Force (BEF) was the six divisions the British Army sent to the Western Front during the First World War. Planning for a British Expeditionary Force began with the 1906–1912 Haldane Reforms of the British Army carried out by the Secretary of State for War Richard Haldane following the Second Boer War (1899–1902).
The First Australian Imperial Force was the main expeditionary force of the Australian Army during the First World War. It was formed as the Australian Imperial Force (AIF) following Britain's declaration of war on Germany on 15 August 1914, with an initial strength of one infantry division and one light horse brigade. The infantry division subsequently fought at Gallipoli between April and December 1915, with a newly raised second division, as well as three light horse brigades, reinforcing the committed units.
The Territorial Force was a part-time volunteer component of the British Army, created in 1908 to augment British land forces without resorting to conscription. The new organisation consolidated the 19th-century Volunteer Force and yeomanry into a unified auxiliary, commanded by the War Office and administered by local county territorial associations. The Territorial Force was designed to reinforce the regular army in expeditionary operations abroad, but because of political opposition it was assigned to home defence. Members were liable for service anywhere in the UK and could not be compelled to serve overseas. In the first two months of the First World War, territorials volunteered for foreign service in significant numbers, allowing territorial units to be deployed abroad. They saw their first action on the Western Front during the initial German offensive of 1914, and the force filled the gap between the near destruction of the regular army that year and the arrival of the New Army in 1915. Territorial units were deployed to Gallipoli in 1915 and, following the failure of that campaign, provided the bulk of the British contribution to allied forces in the Sinai and Palestine Campaign. By the war's end, the Territorial Force had fielded twenty-three infantry divisions and two mounted divisions on foreign soil. It was demobilised after the war and reconstituted in 1921 as the Territorial Army.
The New Zealand Expeditionary Force (NZEF) was the title of the military forces sent from New Zealand to fight alongside other British Empire and Dominion troops during World War I (1914–1918) and World War II (1939–1945). Ultimately, the NZEF of World War I became known as the First New Zealand Expeditionary Force. The NZEF of World War II was known as the Second New Zealand Expeditionary Force (2NZEF).
The Lancashire Fusiliers was a line infantry regiment of the British Army that saw distinguished service through many years and wars, including the Second Boer War, the First and Second World Wars, and had many different titles throughout its 280 years of existence. In 1968 the regiment was amalgamated with the other regiments of the Fusilier Brigade – the Royal Northumberland Fusiliers, Royal Warwickshire Fusiliers and the Royal Fusiliers – to form the current Royal Regiment of Fusiliers.
The South Lancashire Regiment was a line infantry regiment of the British Army in existence from 1881 to 1958.
The Cameronians (Scottish Rifles) was a rifle regiment of the British Army, the only regiment of rifles amongst the Scottish regiments of infantry. It was formed in 1881 under the Childers Reforms by the amalgamation of the 26th Cameronian Regiment and the 90th Perthshire Light Infantry. In 1968, when reductions were required, the regiment chose to be disbanded rather than amalgamated with another regiment, one of only two infantry regiments in the British Army to do so, with the other being the York and Lancaster Regiment. It can trace its roots to that of the Cameronians, later the 26th of Foot, who were raised in 1689. The 1881 amalgamation coincided with the Cameronian's selection to become the new Scottish Rifles.
The 123rd Battalion, Royal Grenadiers, CEF was a unit in the Canadian Expeditionary Force during the First World War. Based in Toronto, Ontario, they began recruiting in November 1915. After arriving in England, they continued to train as an infantry battalion for several months, but just before mobilizing to France in January 1917, the battalion was redesignated the 123rd Pioneer Battalion, Royal Grenadiers, CEF.
The 3rd Brigade is a combined arms brigade of the Australian Army, principally made up of the 1st and 3rd Battalions of the Royal Australian Regiment. Initially raised in 1903 as part of the post-Federation Australian Army, it was removed from the order of battle in 1906 following the restructure of the field force. It was re-formed in 1914 for service during World War I, taking part in the fighting at Gallipoli and on the Western Front in Europe. During World War II the brigade was used in a defensive role before it was disbanded in 1944. It was re-raised in 1967 for service during the Vietnam War and later went on to provide the nucleus of the deployment to East Timor during the Australian-led intervention in 1999. The brigade is currently based at Lavarack Barracks in Townsville, Queensland.
The Russian Expeditionary Force [REF] was a World War I military force sent to France and Greece by the Russian Empire. In 1915, the French requested that Russian troops be sent to fight alongside their own army on the Western Front. Initially they asked for 300,000 men, an unrealistically high figure, probably based on assumptions about Russia's 'unlimited' reserves. General Mikhail Alekseev, the Imperial Chief of Staff, was opposed to sending any Russian troops, although Nicholas II finally agreed to send a unit of brigade strength. The first Russian brigade finally landed at Marseille in April 1916.
The South African Overseas Expeditionary Force (SAOEF) was a volunteer military organisation in World War I.
The Indian Army, also called the British Indian Army, was involved in World War I as part of the British Empire. More than one million Indian troops served overseas, of whom more than 60,000 died during the war.
The South African 1st Infantry Brigade was an infantry brigade of the army of the Union of South Africa during World Wars I and II. During World War I, the brigade served as a British formation in Egypt and on the Western Front, most famously the Battle of Delville Wood. It was reactivated at the start of the Second World War as a South African formation and served in East Africa and the Western Desert; the brigade disbanded on 1 January 1943.
The 1st Light Horse Brigade was a mounted infantry brigade of the Australian Imperial Force (AIF), which served in the Middle Eastern theatre of World War I. The brigade was initially formed as a part-time militia formation in the early 1900s in New South Wales and then later in Queensland. In 1914, the brigade was re-constituted as part of the AIF and was sent to Egypt. Forming part of the New Zealand and Australian Division, during the Gallipoli Campaign it served in a dismounted role between May and December 1915. After being withdrawn to Egypt it served in the Anzac Mounted Division from March 1916 as part of the Egyptian Expeditionary Force, taking part in the Sinai and Palestine Campaign until the end of the war. It was disbanded in 1919. After the war, the AIF light horse regiments were demobilised and disbanded; however, the brigade briefly existed as a part-time militia formation in Queensland until 1921 when its regiments were reorganised into cavalry brigades.
4th Battalion, CEF was an infantry battalion raised as part of the Canadian Expeditionary Force for service during the First World War. Raised in Canada in September 1914, the battalion sailed to the United Kingdom within weeks of its establishment. After a short period of training it was committed to the fighting on the Western Front, remaining in France and Belgium until the war ended. It returned to Canada in mid-1919 and after its personnel had been demobilized, the battalion was subsequently disbanded in 1920.
The Force in Egypt was a British Army formation established in August 1914 to administer garrisoning armed forces in Egypt at the beginning of the First World War. The force had the objective of protecting the Suez Canal and was originally commanded by Major General Julian Byng, but he was replaced by General J. Maxwell, who took command on 8 September 1914. Initially, the main threat to the Suez came from Germany and throughout the early months several of the force's elements were sent to Europe to take part in the fighting on the Western Front. On 5 November 1914, Britain and France declared war on the Ottoman Empire, after which the Force in Egypt faced a direct threat from Ottoman forces, which was realised in February 1915 with a raid on the Suez Canal. This threat remained until 1916 when the British forces went on the offensive.
The Australian Army was the largest service in the Australian military during World War I. The First Australian Imperial Force (AIF) was the Army's main expeditionary force and was formed from 15 August 1914 with an initial strength of 20,000 men, following Britain's declaration of war on Germany. Meanwhile, the separate, hastily raised 2,000-man Australian Naval and Military Expeditionary Force (AN&MEF), landed near Rabaul in German New Guinea on 11 September 1914 and obtained the surrender of the German garrison after ten days; it later provided occupation forces for the duration of the war. In addition, small military forces based on the pre-war Permanent Forces and part-time Citizen Forces were maintained in Australia to defend the country from attack.
The 2nd Home Counties Division was a 2nd Line Territorial Force division of the British Army in World War I. The division was formed as a duplicate of the 44th Division in November 1914. As the name suggests, the division recruited in the Home Counties, particularly Kent, Middlesex, Surrey and Sussex. In August 1915, in common with all Territorial Force divisions, it was numbered as 67th Division. Between September 1917 and the end of the year, the division was extensively reorganized and lost its territorial identity; henceforth it was known as 67th Division.
1st SA Infantry Regiment was an infantry regiment of the South African Army, during World War I.
2nd South African Infantry Regiment was an infantry regiment of the South African Overseas Expeditionary Force during the First World War.
Union of South Africa 
Southern Rhodesia 
United Kingdom 
