13. Glamorgan Yeomanry
August 1914: Mobilised at Bridgend as a Part of the South Wales Mounted Brigade, of the 1st Mounted Division. November 1915: Dismounted and moved overseas for active service in Egypt, attached to the 4th Dismounted Brigade.
1917: Re designated as an infantry battalion and converted into the 24th (Pembroke and Glamorgan Yeomanry) Battalion, the Welsh Regiment, 231st Brigade, 74th (Yeomanry) Division. As part of the 74th Yeomanry Division they were involved in the Second Battle of Gaza, Third Battle of Gaza, Battle of Beersheba and the Battle of Epehy.
September 1914: 2/1st Glamorgan Yeomanry formed. Converted into a Cyclist unit in 1917.
1915: 3/1st Glamorgan Yeomanry Formed. Remained in United Kingdom until disbanded in early 1917.
14. Gloucestershire Yeomanry
Info to follow.
15. Hampshire Yeomanry
Upon mobilisation, 1/1st Hampshire Yeomanry was part of the 1st South Western Mounted Brigade.
Served in France and saw action in Messines, the Somme, Arras, Ypres, and Flanders. The regiment re roled into an Infantry Regiment and became the 15th Battalion, The Hampshire Regiment until the end of the war.
The 2/1st Hampshire Yeomanry moved to Ireland and converted to a cyclist unit in 1916.
3/1st Hampshire Yeomanry 3/1st Hampshire Yeomanry stayed in the United Kingdom and converted to infantry at the same time as the first regiment.
16. Hertfordshire Yeomanry
August 1914: Mobilised as part of the Eastern Mounted Brigade.
January 1915: Moved to Egypt and joined the Yeomanry Mounted Brigade.The Brigade moved to Gallipoli as dismounted troops and redesignated as the 5th Mounted Brigade.
December 1915: Returned to Egypt and were remounted and moved to the Western Frontier Force. March 1916: Regiment was split up and squadrons attached to other units and sent to different theatres.
September 1914: 2nd line regiment was formed. It remained in the United Kingdom and did not see active service as a regiment, although it did supply drafts of fit troops for service in France in March 1918.
1915: 3rd line regiment formed. It too remained in the United Kingdom until being absorbed by the 6th Reserve Cavalry Regiment in February 1917.
17. Royal East Kent Yeomanry
August 1914: Mobilised as part of the South Eastern Mounted Brigade, 1st Mounted Division.
September 1915: Dismounted and moved to the Dardanelles.
8th October 1915: Landed and saw action at the Battle of Gallipoli, attached to the 42nd Division.
February 1916: Egypt. Joined the 3rd Dismounted Brigade.
February 1917: Amalgamated with the West Kent Yeomanry, together they formed the 10th Battalion (Royal East Kent and West Kent Yeomanry), the Buffs and moved to France in May 1918 as Infantry.
18. Royal West Kent Yeomanry
August 1914: Mobilised as a part of the South Eastern Mounted Brigade. Sent to the Canterbury area where they contributed to the Kent coastal defences.
September 1915: Sailed for Gallipoli and the Dardanelles Campaign against Turkey, here they were dismounted and served as infantry.
March 1917: Amalgamated with the 1/1st Royal East Kent Yeomanry and formed the 10th (Yeomanry) Battalion, The Buffs. The 10th Buffs was attached to the 74th (Yeomanry) Division, and participated in General Allenby's successful Palastine offensive against the Turkish Army and took part in the Second Battle of Gaza.
31 October 1917: Battle of Beersheba.
December 1917: 10th Buffs played a major part in the capture of Jerusalem.
July 1918: Moved to France and took part in the action at Merville on the Somme.After the War the 10th (Yeomanry) Battalion, The Buffs was disbanded.
19. Lanarkshire Yeomanry
August 1914: Mobilised into the Lowland Mounted Brigade, but remained in Britain until 1915. September 1915: Landed in Gallipoli, serving as dismounted infantry. October 1915: Attached to 52nd (Lowland) Division.
January 1916: Withdrawn and moved to Egypt.
Early 1917: Amalgamated with The Ayrshire Yeomanry to form the 12th (Ayr and Lanark Yeomanry) Battalion of the Royal Scots Fusiliers in 74th (Yeomanry) Division, seeing service in the Palestine campaign.
May 1918: Moved to Western Front. Whilst on the Western Front, Sergeant Thomas Caldwell of the regiment was awarded a Victoria Cross.
The regiment raised a second-line battalion, the 2/1st Lanarkshire Yeomanry, in September 1914.
A third-line battalion was formed in 1915, and remained in the United Kingdom until disbanded in 1917.
20. Lanarkshire, Royal Glasgow Yeomanry
August 1914: On mobilisation the 1/1st Queen's Own Royal Glasgow Yeomanry was attached to the Lowland Mounted Brigade.
1915: Regiment was split up with RHQ and C Squadron moving to Egypt in June 1915. Later that year in October they joined the British 52nd Division as dismounted troops for the Dardanelles campaign and participated in the Battle of Gallipoli.
May 1915: B Squadron had joined the 9th (Scottish) Division in France, leaving them a year later in May 1916 for V Corps Cavalry Regiment.
June 1915: A Squadron had joined the 11th (Northern) Division and moving to the British 24th Division after few days later joining V Corps Cavalry Regiment in May 1916.
May 1916: RHQ left the Division and moved to France joining the V Corps as their Cavalry Regiment.
August 1917: C Squadron left the Division, joining XXI Corps Cavalry Regiment and later deployed as Line of Communication troops.
August 1917: The Corps Cavalry Regiment squadrons were re-reoled as infantry and sent for infantry training at Etaples the Regiment would form the majority of the 18th Battalion the Highland Light Infantry.