On 4 July 1918, American and Australian troops captured the village of Hamel and the ridge overlooking it. It was not a big battle: the equivalent of one Australian division and one battalion of newly arrived Americans were the only infantry involved. Although Hamel is not a famous named battle it is noteworthy for an increased level of sophistication . At Hamel machines went a long way towards relieving the infantry of the obligation to fight its way forward. After the battle, Haig's Headquarters promulgated its lessons for other commanders.

Among the senior officers who visited Monash's Headquarters was Brigadier-General Bernard Montgomery. The military thinker and former Tank Corps officer, Major-General J.F.C. Fuller, thought Hamel more important in making the reputation of the Tank Corps than the battle of Cambrai.