Well-planned successful limited Allied action on the Western Front, 4 July 1918. Designed to straighten the Allied line the battle was notable for the careful co-ordination of infantry, artillery, armour and aircraft. Two brigades of Australian infantry assisted by American troops, British Mark V tanks and exceedingly accurate artillery barrages, quickly overrran German positions and took 1,000 prisoners. This battle witnessed the first air drop of supplies to Allied troops in action when RFC units dropped 100,000 rounds of ammunition to Australian machine gunners.