Overall Commander - Field Marshal Sir John D.P. French
Cavalry Commander - Major General Edmund H.H. Allenby
First Infantry Corps Commander - Lieutenant General Sir Douglas Haig
Second Infantry Corps Commander - Lieutenant General Sir J.M. Grierson (Died August 1914)
General Sir H.L. Smith-Dorrien
Third Infantry Corps Commander - Major General W.P. Pulteney
British Army Commanders, 1915
Overall Commander - Field Marshal Sir John D.P. French
First Army - Lieutenant General Sir Douglas Haig
Second Army - General Sir H.L. Smith-Dorrien
British Army Commanders, 1916
Overall Commander - Field Marshal Sir Douglas Haig
First Army - Major General Sir Horne
Second Army - General Sir H.L. Smith-Dorrien
Third Army - Major General Edmund H.H. Allenby
Fourth Army - Major General Sir Henry Rawlinson
Reserve Army - General Sir Gough
British Army Commanders, 1917
Overall Commander - Field Marshal Sir Douglas Haig
First Army - Major General Sir Horne
Second Army - General Sir Hubert Plumer
Third Army - Major General Edmund H.H. Allenby (Sent to Palestine, September, 1917)
General Sir Julian Byng
Fourth Army - Major General Sir Henry Rawlinson
Fifth Army - General Sir Gough
British Army Commanders, 1918
Overall Commander - Field Marshal Sir Douglas Haig
First Army - Major General Sir Horne
Second Army - General Sir Hubert Plumer
Third Army - General Sir Julian Byng
Fourth Army - Major General Sir Henry Rawlinson
Fifth Army - General Sir Gough (Replaced in the Summer of 1918)
General Birdwood