| Unit Name: | 9th Cavalry Brigade |
| Dates: | 1915–1919 |
| Type: | Cavalry |
| Size: | Brigade |
| Command Structure: | 1st Cavalry Division |
| Battles: | World War I |
The 9th Cavalry Brigade was a cavalry brigade of the British Army in World War I. It was formed in France in 1915 and served on the Western Front as part of the 1st Cavalry Division until the end of the war.
| Divisional reconnaissance squadrons, August 1914 | ||
| A Squadron | 3rd Division | |
| B Squadron | 2nd Division | |
| C Squadron | 1st Division | |
| A Squadron | 5th Division | |
| B Squadron | 4th Division | |
| C Squadron | 6th Division | |
On formation, the brigade was assigned to the 1st Cavalry Division to bring it up to a three brigade standard. 1st Cavalry Division also obtained a third Cavalry Field Ambulance (9th, from England on 23 May) and a third Mobile Veterinary Section (39th, from England on 23 August).
On 12 June, 1/1st Bedfordshire Yeomanry joined from the Eastern Mounted Brigade in England to bring the brigade up to the standard three regiment strength. On 28 February 1916, a Machine Gun Squadron was formed from the machine gun sections of the brigade's constituent regiments.[1]
With the 1st Cavalry Division, the brigade took part in most of the major actions where cavalry could be used as a mounted mobile force.[2] At other times it formed a dismounted unit and served in the trenches (as a regiment under the command of the brigadier). Notable amongst these occasions was on 24–25 March 1918 when, in the Battle of Bapaume, the division formed a "Dismounted Division" under Brigadier-General D'Arcy Legard.
In 1915, it took part in the Second Battle of Ypres and the Battle of Flers–Courcelette in 1916. 1917 saw action at the Battle of Arras and the Battle of Cambrai and in 1918 at the First Battle of the Somme, the Battle of Amiens, the Second Battle of the Somme and the battles of the Hindenburg Line. It then took part in the Final Advance in Artois and the Final Advance in Picardy.
By the Armistice, the division was north of Mons, about 9 miles east of Ath on the Fifth Army front. On 16 November 1918, orders were received that the 1st Cavalry Division would lead the advance of the Second Army into Germany. Moving through Namur, the division crossed the frontier on 1 December and on 7 December the brigade reached the Rhine north of Cologne. On 12 December, the brigade crossed the Rhine on the Hohenzollern Bridge and reached its position on the perimeter of the bridgehead the next day.
| Unit | From | To | |
|---|---|---|---|
| 14 April 1915 | |||
| 14 April 1915 | |||
| 12 June 1915 | 10 March 1918 | ||
| April 1918 | |||
| 10 March 1918 | |||
| 1/1st Warwickshire Battery, RHA (TF) | 14 April 1915 | 21 November 1916 | |
| 1 December 1916 | |||
| 14 April 1915 | |||
| 28 February 1916 |
The 9th Cavalry Brigade had the following commanders:
| From | Rank | Name | |
|---|---|---|---|
| 14 April 1915 | W.H. Greenley | ||
| 15 November 1915 | Brigadier-General | S.R. Kirby | |
| 25 October 1916 | G.D. Franks (acting) | ||
| 31 October 1916 | Brigadier-General | D'A. Legard |