The 6th Queen Elizabeth's Own Gurkha Rifles was a rifle regiment of the British Indian Army, before being transferred to the British Army following India's independence. Originally raised in 1817 as part of the army of the British East India Company, the regiment has been known by a number of names throughout its history. Initially the unit did not recruit from the Gurkhas, although after being transferred to the British Indian Army following the Indian Rebellion of 1857, it became a purely Gurkha regiment, in due course with its regimental headquarters at Abbottabad in the North West Frontier Province of British India. After 1947 the regiment was one of only four Gurkha regiments to be transferred to the British Army and this continued up until 1994, when it was amalgamated with other Gurkha regiments to form the Royal Gurkha Rifles. Over the course of its 177-year history, the regiment was awarded 25 battle honours, although prior to World War I it had only been awarded one and no battle honours were awarded to it after World War II.
The 15th Indian Division was an infantry division of the British Indian Army that saw active service in the First World War. It served in the Mesopotamian Campaign on the Euphrates Front throughout its existence. It did not serve in the Second World War, but was reformed at Dehradun in 1964 as part of the post-independence Indian Army.
The 3rd (Lahore) Division was an infantry division of the Indian Army and before 1895, the Bengal Army, first organised in 1852. It saw service during World War I as part of the Indian Corps in France before being moved to the Middle East where it fought against troops of the Ottoman Empire.
The 2nd (Rawalpindi) Division was a regular army division of the British Indian Army. It was formed in 1903 after the Kitchener reforms of the Indian Army. During World War I it remained in India for local defence but it was mobilised for action on the North West Frontier on several occasions during the period. The Division was mobilised in 1919 for service during the Third Afghan War.
The 16th Indian Division was an infantry division of the Indian Army during the First World War. It was formed in December 1916, during the First World War. It was the only war formed division of the British Indian Army that was not sent overseas, instead it was sent to guard the North West Frontier. The division took over the responsibilities of the 3rd Lahore Divisional Area when it was disbanded in May 1917.
The 1st (Risalpur) Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1906 as a result of the Kitchener Reforms. It remained in India during the First World War but took an active part in the Third Anglo-Afghan War in 1919.
The 34th Indian Brigade was an infantry brigade of the British Indian Army that saw active service in the Mesopotamian campaign in the Indian Army during the First World War. It was reformed for the Second World War as the 34th Indian States Forces Infantry Brigade.
The 11th Gurkha Rifles was a Gurkha regiment of the British Indian Army. It was formed in Mesopotamia and Palestine in May 1918, saw active service in the First World War and the Third Anglo-Afghan War, and was disbanded in April 1922.
The Ambala Brigade was an infantry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in November 1914 to replace the original Ambala Brigade that had been mobilized as the 3rd (Ambala) Cavalry Brigade for service on the Western Front. It remained in India throughout the war.
The 12th Indian Brigade was an infantry brigade of the British Indian Army that saw active service in the First World War. It served in the Mesopotamian Campaign on the Euphrates Front throughout its existence.
The 54th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It took part in the Mesopotamian campaign and formed part of the occupation force for Iraq post-war. It was not reformed for the Second World War.
The 58th Indian Brigade was an infantry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It remained in India throughout the war. It was not reformed for the Second World War.
The 50th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It served in the Mesopotamian Campaign on the Euphrates Front throughout its existence. It was not reformed for the Second World War.
The 41st Indian Brigade was an infantry brigade of the British Indian Army that saw service with the Indian Army during the First World War. It served in the Mesopotamian Campaign on the Euphrates Front throughout its existence. It was not reformed for the Second World War.
The 35th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It took part in the Mesopotamian campaign and was disbanded shortly after the end of the war. It was not reformed for the Second World War.
The 37th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It took part in the Mesopotamian campaign and was disbanded shortly after the end of the war.
The 36th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It took part in the Mesopotamian campaign and later formed part of the North Persia Force. It remained with the Force until withdrawn in June 1921.
The 28th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. Formed in October 1914, it defended the Suez Canal in early 1915, ended the Ottoman threat to Aden in July 1915, took part in the Mesopotamian Campaign in 1916 and 1917, before finishing the war in the Sinai and Palestine Campaign. It remained in Palestine until it was broken up in 1920.
The 57th Indian Brigade was an infantry brigade of the British Indian Army that was active in the Indian Army during the First World War and took part in the Third Anglo-Afghan War in 1919. It was not reformed for the Second World War.
The 150th Infantry was an infantry regiment of the British Indian Army. It was formed in Mesopotamia in May 1918, saw service in the First World War and the Third Anglo-Afghan War, and was disbanded in June 1921.
British India 
British Indian Army 