[2] On 18 March 1908, Ayrshire Royal Horse Artillery (Territorial Force) was proposed as a new unit and it was recognized by the Army Council on 26 May 1908.

[3] The unit consisted of The battery was equipped with four[1] Ehrhardt 15-pounder[5] guns and allocated as artillery support to the Lowland Mounted Brigade.

[9] In late September 1915, the Lowland Mounted Brigade (without the battery) was dismounted and left Fife for Devonport en route to Gallipoli.

[10] The battery remained in the United Kingdom until February 1916 when it (and its ammunition column) was embarked at Southampton and transported to Alexandria in Egypt.

[14] The battery served with the ANZAC Mounted Division in the Sinai and Palestine Campaign throughout the rest of the war.

[19] The brigade, and its batteries, remained with the ANZAC Mounted Division for the rest of the Sinai and Palestine Campaign.

[15] At the beginning of 1918, the division was attached to XX Corps and helped to capture Jericho (19 – 21 February) and then formed part of Shea's Force for the First Trans-Jordan Raid (21 March – 2 April).

It returned to the Desert Mounted Corps for the Second Trans-Jordan Raid (30 April – 4 May), the Battle of Abu Tellul (14 July) and the capture of Amman (25 September).

2nd Line units performed the home defence role, although in fact most of these were also posted abroad in due course.