The 48th Battalion was an infantry battalion of the Australian Army. It was originally raised in 1916 for service during World War I and took part in the fighting in the trenches of the Western Front in France and Belgium, before being disbanded in early 1919. After the war, the battalion was re-raised as a part-time unit based initially in Victoria and later in South Australia. In 1930 it was amalgamated with the 43rd Battalion and remained so until mid-1942, subsequently being linked with the 10th Battalion. The battalion did not see combat during World War II, and after the war was re-raised as an amalgamated unit, again with the 43rd Battalion, in 1952. They remained linked until 1960 when the 43rd/48th Battalion was subsumed by the Royal South Australia Regiment.