The 2/3rd Machine Gun Battalion was formed in June 1940 as part of the 7th Division and served in Egypt, Syria, the Netherlands East Indies and New Guinea during World War II. Under the command of Lieutenant Colonel Arthur Blackburn when it was raised, the battalion was primarily a South Australian unit, although it had sub-units formed in Victoria, Tasmania and Western Australia. After completing training in Australia, in April 1941 the battalion embarked for the Middle East. In June/July 1941 it saw action against Vichy French forces during the Syria–Lebanon campaign, during which time the battalion was heavily involved in supporting various elements of the 7th Division.