Major changes took place within the senior ranks of the Australian Corps. General Sir William Birdwood, commanding officer of the Australian Corps was given the command of the British Fifth Army, handing over the Corps to Australian born Lieutenant-General Sir John Monash (photograph right) who in turn at the AIF 3rd Division was replaced by Major-General Sir John Gellibrand, commanding officer of the 13th Brigade, and formerly of 6th Brigade. Brigadier-General Sir Neville Smyth, VC, (AIF 2nd Division) became commanding officer of the British 58th & 59th Divisions, and he was replaced by Major-General Sir Charles Rosenthal.