In accordance with the
Territorial and Reserve Forces Act 1907 (
7 Edw. 7, c.9) which brought the
Territorial Force into being, the TF was intended to be a home defence force for service during wartime and members could not be compelled to serve outside the country. However, on 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.
1/3rd County of London Yeomanry (Sharpshooters) The 1st Line regiment mobilized with its brigade and concentrated in
Berkshire at the outbreak of war. It joined
2nd Mounted Division on 2 September and moved with the division to
East Anglia in November 1914. On 14 April 1915, the regiment departed
Avonmouth for
Egypt, arriving at
Alexandria on 27 April. It was posted to the
Suez Canal Defences (near
Ismaïlia) by the middle of May and its parent brigade was designated 4th (London) Mounted Brigade. The regiment was dismounted in August 1915 for service in the
Gallipoli Campaign. It left a
squadron headquarters and two
troops (about 100 officers and men) in Egypt to look after the horses. The regiment landed at
Suvla Bay on the morning of 18 August and moved into reserve positions at Karakol Dagh. It moved to "C" Beach, Lala Baba on 20 August. On 21 August it advanced to Chocolate Hill under heavy fire and took part in the attack on Hill 112. The regiment formed part of a battalion sized unit
4th London Regiment. The regiment embarked for
Mudros on 2 November and, in December 1915, returned to Egypt, where it was reformed and remounted. In March 1916, the brigade was redesignated as 8th Mounted Brigade. From November 1916 to June 1917, the regiment took part in the
Salonika Campaign, serving as GHQ Troops with the
British Salonika Army. From 31 October, it took part in the
Third Battle of Gaza, including the
Battle of Beersheba and the Capture of the Sheria Position. It took part in the
Battle of Mughar Ridge on 13 and 14 November and the
Battle of Nebi Samwil for 17 to 24 November. From 27 to 29 November, it withstood the Turkish counter-attacks during the
Capture of Jerusalem. In March 1918, the
1st Indian Cavalry Division was broken up in France. The British units (notably
6th (Inniskilling) Dragoons,
17th Lancers, 1/1st
Queen's Own Yorkshire Dragoons and
A,
Q and
U Batteries RHA) remained in France and the Indian elements were sent to Egypt. By an
Egyptian Expeditionary Force GHQ Order of 12 April 1918, the mounted troops of the EEF were reorganised when the Indian Army units arrived in
theatre. On 24 April 1918, the Yeomanry Mounted Division was
indianized and its title was changed to 1st Mounted Division, the third distinct division to bear this title. On 24 April 1918, the 8th Mounted Brigade was merged with elements of the
8th (Lucknow) Cavalry Brigade: the Sharpshooters and the
City of London Yeomanry (Rough Riders) left the brigade on 7 April and were merged to form
E Battalion, Machine Gun Corps. They were replaced by
29th Lancers (Deccan Horse) and
36th Jacob's Horse from 8th (Lucknow) Cavalry Brigade. E Battalion, MGC was posted to France, arriving on 1 June 1918. On 17 August 1918, it was renumbered as
103rd (City & 3rd Cty. of London Yeo.) Battalion, Machine Gun Corps. It remained on the
Western Front for the rest of the war. At the
Armistice, it was serving as Army Troops with the
First Army.
2/3rd County of London Yeomanry (Sharpshooters) The 2nd Line regiment was formed in London in August 1914. By March 1915, it was with
2/1st London Mounted Brigade in
2/2nd Mounted Division and was at
Norwich in
Norfolk. the brigade was numbered as
12th Mounted Brigade and the division as
3rd Mounted Division. In July 1916, the regiment was converted to a
cyclist unit in
4th Cyclist Brigade,
1st Cyclist Division and was stationed at
North Walsham. In November 1916, the division was broken up and regiment was merged with the
2/1st County of London Yeomanry to form
6th (1st and 3rd County of London) Yeomanry Cyclist Regiment in
2nd Cyclist Brigade, probably at
Reepham. In March 1917, it resumed its identity as
2/3rd County of London Yeomanry and was at
Worstead near North Walsham. By July 1917, the regiment moved to
Overstrand and in 1918 to
Coltishall. In May 1918, the regiment moved to
Ireland and was stationed at
The Curragh and
Athlone, still in 2nd Cyclist Brigade, until the end of the war.
3/3rd County of London Yeomanry (Sharpshooters) The 3rd Line regiment was formed in 1915 and in the summer it was affiliated to a
Reserve Cavalry Regiment in
Eastern Command. In the summer of 1916, it was affiliated to the
9th Reserve Cavalry Regiment at
The Curragh. Early in 1917, it was absorbed into the
2nd Reserve Cavalry Regiment at The Curragh. ==Between the wars==