Monash, as well as Chauvel, were promoted to Lt Gen during WW1, which is corps commander rank, and both knighted too.

Monash was promoted, as a civilian, to general in the late 1920’s at the instance of Chauvel when PM Scullin was to promote Chauvel as he was still active in the Army and chief of the Australian peace time forces. Both were promoted to General because of Chauvel intervention.

A Maj Gen commands a division (9 infantry battalions plus other arms and services) while a Lt Gen commands a Corps (3 division usually). Chauvel commanded the Desert Mounted Corps in Palestine and Syria while Monash commanded the Australian Corps near the end of WW1 in France/Belgium.

Chauvel was promoted first to Lt Gen rank and the first Australian to command a Corps too but I don’t hear called to promote him to FM.

A General commands an Army (3 Corps or 9 divisions)) and not even Monash’s larger Australian Corp of 5 divisions was the size of an Army. As for field marshal rank a FM commands a number of armies and only nations like Germany, Russia, Britain, France and USA had forces that large in WW1.

It speaks for all time .nothing else is needed

ben