Complex sentence: The 61st Battalion was an infantry battalion of the Australian Army which was briefly raised in 1917 during the First World War but was disbanded without seeing active service before being later re-raised as a part of the Militia in 1938 in Brisbane, Queensland.
Split into simpler sentences: The 61st Battalion was an infantry battalion of the Australian Army. Later it was re-raised as a part of the Militia in 1938 in Brisbane, Queensland.