The 2/11th Armoured Car Regiment was an Australian Army armoured reconnaissance regiment of World War II. The regiment was formed in mid-1941 and was intended to be deployed to the Middle East. In late 1941, in response to the growing threat posed by Japan's entry into the war in the Pacific, it was employed in a defensive role to guard against a possible invasion of mainland Australia. It was disbanded in early 1944 without seeing action as part of the reduction of Australia's armoured forces and the reallocation of manpower to other formations more suited to jungle warfare.

The 1st Armoured Division was an armoured formation of the Australian Army, raised in 1941 as part of the Second Australian Imperial Force (AIF) during World War II. While the Division was originally to be deployed to North Africa in late 1941, it was retained in Australia following the outbreak of the Pacific War. The 1st Armoured Division formed a key element of Australia's defences against a feared Japanese invasion and was disbanded in Western Australia in September 1943.