Lieutenant-General Sir John Monash: Australian Corps, Hamel & Amiens 1918
Lieutenant-General Sir John Monash commanded the Australian Corps during the Battle of Amiens and the final Allied offensives of 1918. His reputation rests on a methodical approach to combined arms: infantry should advance as part of a system of artillery, tanks, aircraft, engineers, logistics and communications rather than be expected to win by courage alone.
Engineer and citizen soldier
Monash was a civil engineer and militia officer before the war. He commanded the 4th Australian Infantry Brigade at Gallipoli and later the 3rd Australian Division on the Western Front.
In May 1918 he took command of the Australian Corps.
Hamel
The Battle of Hamel on 4 July 1918 is often used as the clearest small-scale example of Monash's method. Infantry, tanks, artillery and aircraft were integrated into a carefully timed plan against a limited objective.
The battle was deliberately rehearsed and scheduled. It succeeded quickly and became an important demonstration of combined-arms coordination before Amiens.
Amiens
At Amiens on 8 August, the Australian Corps attacked beside the Canadian Corps under Rawlinson's Fourth Army. The plan relied on surprise, massed tanks, predicted artillery fire and close coordination across different arms.
What I notice in Monash's approach is that no supporting arm exists for its own sake. Fire has to arrive when the infantry needs it. Tanks have to be where the ground allows them to help. Engineers need routes and crossings ready. Communications must keep the whole thing connected. That is what makes 'combined arms' more than a phrase.
The opening advance was substantial and German forces suffered major losses. Amiens became the start of the Hundred Days offensive sequence.
Later 1918
The Australian Corps continued fighting through the later advance, including actions around Mont St Quentin, Péronne and the Hindenburg Line.
By this stage the corps had suffered heavy losses over years of war. Commanders had to balance operational demands against shrinking infantry strength and the cumulative strain on formations.
Why Monash matters
Monash is sometimes portrayed as the commander who 'solved' the Western Front. That is too simple. By 1918, several Allied armies had developed increasingly sophisticated combined-arms methods.
His particular importance is that he articulated and practised the idea with unusual clarity: infantry should be carried to the objective by the coordinated work of the whole military system, then be ready to hold what had been gained.
Related: Amiens field guide · Henry Rawlinson biography
