Planning by General Douglas MacArthur, as supreme commander of Allied forces, for Operation Olympic—as the initial landings on Kyūshū in late 1945 were to be known—revolved around land forces composed entirely of US Army and Marine Corps units. However, the Australian Advisory War Council suggested to MacArthur that the significant involvement of Australian Army units in the Pacific War over the previous three years meant that they should be involved in landings on Kyushu; nevertheless, the Australian government was considering the attachment of smaller units to US formations. The aircraft carriers and battleships of a combined Commonwealth fleet, known as the British Pacific Fleet, were to be involved in Olympic, along with Australian cruisers and destroyers that had been integrated into US Navy task forces (since 1942).