In fact, the 75th Division already had four Indian battalions assigned,[c] so of the 36 battalions needed to reform the divisions, 22 were improvised[16] by taking whole companies from existing units already on active service in Mesopotamia and Palestine to form the 150th Infantry (3 battalions), 151st Sikh Infantry (3), 152nd Punjabis (3), 153rd Punjabis (3), 154th Infantry (3), 155th Pioneers (2), 156th Infantry (1) and the 11th Gurkha Rifles (4).[17] The donor units were then brought back up to strength by drafts. In the event, just 13 of the battalions were assigned to the divisions[18] and the remaining nine were transferred from Mesopotamia to India in June 1918.[19]
Formation
The regiment formed three battalions in Mesopotamia in May 1918 with complete companies posted from regiments serving in the 15th, 17th, and 18th Indian Divisions.[20] All three battalions were transferred to India in June 1918.[21][22] The 2nd Battalion later took part in the Third Anglo-Afghan War in 1919 as part of the 16th Indian Division.[23] They were disbanded in India in 1920 and 1921.[1]
Battalions
1st Battalion
The 1st Battalion was formed in Mesopotamia in May 1918 by the transfer of complete companies from:[2]
^Gaylor[1] states that the regiment was called the 150th Indian Infantry whereas Perry[2] says 150th Infantry. The latter seems more likely given the designation of, for examples, the pre-war 18th Infantry, 98th Infantry and 108th Infantry.
^In March 1917, the Egyptian Expeditionary Force started forming the 75th Division, originally to be made up of Territorial Force battalions arriving from India. In May 1917, to speed up the formation of the division, it was decided to incorporate Indian battalions.[14] To this end, the independent 29th Indian Brigade was broken up in June 1917 and its battalions posted to 75th Division.[15]
Becke, Major A.F. (1936). Order of Battle of Divisions Part 2A. The Territorial Force Mounted Divisions and the 1st-Line Territorial Force Divisions (42–56). London: His Majesty's Stationery Office. ISBN1-871167-12-4.
Becke, Major A.F. (1937). Order of Battle of Divisions Part 2B. The 2nd-Line Territorial Force Divisions (57th–69th) with The Home-Service Divisions (71st–73rd) and 74th and 75th Divisions. London: His Majesty's Stationery Office. ISBN1-871167-00-0.