A Cavalry Machine Gun Squadron was attached to each Cavalry Brigade. It was formed from the Machine Gun Sections of a Cavalry Regiment.
| Brigade attached to: | 9th Cavalry Brigade |
| Division attached to: | 1st Cavalry Division |
| Formed from the: | Machine Gun Section of 15th Hussars |
| Machine Gun Section of 19th Hussars | |
| Machine Gun Section of 1st Bedfordshire Yeomanry |
The 9th Cavalry MG Sqdn, MGC was formed on 28 February 1916.
As a unit of the 1st Cavalry Division, it will have taken part in the following battles and engagements.
| 1916 | |
| BATTLES OF THE SOMME | |
| 15 September | Battle of Flers-Courcellette [in reserve to XIV. Corps, Fourth Army]. |
| 1917 | |
| BATTLES OF ARRAS | |
| 09 to 12 April | First Battle of the Scarpe [Cav. Corps, G.H.Q. Reseve. Reinforced First and Third Armies]. |
| BATTLES OF CAMBRAI | |
| 20 and 21 November | The Tank Attack [Cav. Corps.; placed under IV. Corps, on 20 November, Third Army]. |
| 23 to 26 November | Capture of Bourlon Wood [IV. Corps, Third Army] |
| 30 November to 03 December | German Counter-Attacks [VII. Corps; then, on 01 December, Cav. Corps, Third Army]. |
| 1918 | |
| FIRST BATTLES OF THE SOMME | |
| 21 to 23 March | Battle of St. Quentin [XIX. Corps, Fifth Army]. |
| 24 and 25 March | Battle of Bapaume [“Dismounted Div.” (24 to 26 March 1918, under Br.-Gen. Legard; with VII. Corps, Fifth Army]. |
| 26 and 27 March | Battle of Rosieres [Cav. Corps, Fifth Army]. |
| THE ADVANCE TO VICTORY | |
| 08 to 10 August | Battle of Amiens [Cav. Corps, Fourth Army]. |
| SECOND BATTLES OF THE SOMME | |
| 21 August | Battle of Albert [Third Army]. |
| BATTLES OF THE HINDERBURG LINE | |
| 08 October | Battle of Cambrai [Cav. Corps; but working with XIII. Corps and II. Am. Corps, Fourth Army]. |
| 09 to 12 October | Pursuit to the Selle [Cav. Corps, Fourth Army]. |
| THE FINAL ADVANCE | |
| 17 October to 06 November | In Picardy [Cav. Corps, Fourth Army]. |
| 07 to 11 November | In Artois [I. Corps, until 10 November, then Cav. Corps, Fifth Army]. |
On the 11th November, the 1st Cavalry Division was on the Fifth Army front, and its leading troops reached a line north of Mons and about nine miles east of Ath. The division was withdrawn on the 12th, and concentrated near Peruwelz (north of Conde). On the 16th November, orders were issued that the division would lead and cover the advance of the Second Army into Germany, and the forward march was begun the next day. Moving through Namur (22nd), the division crossed the German frontier on the 1st December, the 1st Cav. Bde. covering the advance of the Canadian Corps and the rest of the division leading the march of the II. Corps. On the 6th December, the 2nd Cav. Bde. pushed on, reached Cologne, and secured the bridges over the Rhine, and on the next day the 1st and 9th Cav. Bdes. also reached the Rhine, south and north of Cologne respectively. On the 12th December the division (less 1st Cav. Bde.) crossed the Rhine by the Hohenzollern Bridge, whilst the 1st Cav. Bde. crossed at Bonn; and on the 13th December the brigades moved forward to their final positions on the perimeter of the bridgehead. The advance into Germany was over.
