the outbreak of war on 4 August 1914, many members volunteered for Imperial Service. Therefore, TF units were split in August and September 1914 into 1st Line (liable for overseas service) and 2nd Line (home service for those unable or unwilling to serve overseas) units. Later, a 3rd Line was formed to act as a reserve, providing trained replacements for the 1st and 2nd Line regiments. 1/1st Fife and Forfar Yeomanry They were dismounted and eventually became the 14th (FFY) Battalion of the Black Watch. As part of the 74th (Yeomanry) Division they served in Egypt and Palestine in 1917 and 1918 before moving to France in 1918. 2/1st Fife and Forfar Yeomanry The 2nd Line regiment was formed in September 1914 and in January 1915 was assigned to the 2/1st Highland Mounted Brigade. On 31 March 1916, the remaining Mounted Brigades were ordered to be numbered in a single sequence; the brigade was numbered as 1st Mounted Brigade and joined the 1st Mounted Division in Norfolk. In July 1916, the 1st Mounted Division was reorganised as the 1st Cyclist Division and the regiment was transferred as a mounted unit to the 2nd Mounted Brigade in the new 1st Mounted Division (the former 3rd Mounted Division) in the Brentwood area. In November 1916, the regiment was converted to a cyclist unit in 6th Cyclist Brigade at Ashington in Northumberland. By July 1917, it was at Acklington and it remained there until early 1918 when it went to Ireland with the 6th Cyclist Brigade. It was stationed at The Curragh until the end of the war. 3/1st Fife and Forfar Yeomanry The 3rd Line regiment was formed in 1915; that summer, it was affiliated to a Reserve Cavalry Regiment at Aldershot. In June 1916, it was at Perth. The regiment was disbanded in early 1917 with personnel transferring to the 2nd Line or to the 4th (Reserve) Battalion of the Black Watch at Ripon. Between the wars On 7 February 1920, the Regiment was reconstituted in the Territorial Army with HQ still at Kirkcaldy. Following the experience of the war, it was decided that only the fourteen most senior yeomanry regiments would be retained as horsed cavalry, with the rest being transferred to other roles. As a result, on 6 January 1921, the Regiment was one of eight converted and reduced to 2nd (Fife and Forfar) Armoured Car Company, Tank Corps,