Originally Posted by Pannonian
He fought in a strategically irrelevant area, where it didn't really matter what the result of the campaigns were, beyond mild irritation for the British. The European theatres and the Dardanelles was where the war was won or lost. Similarly, the middle eastern campaign helped cause the collapse of the Ottoman empire, but Russia had been eliminated by that time, and the main Axis protagonist Germany was relatively unaffected by its result (the Brusilov offensive causing the effective elimination of Austria-Hungary was more significant).
Among WW1 generals, I would go for AA Brusilov, whose infiltration tactics were said to have helped inspire the stormtrooper tactic later used in 1918.