Complex sentence: Following the end of the war, the 13th Battalion was demobilised in early 1919, however, it was re-raised in 1921 as a unit of the part-time Citizens Force, based around Maitland, New South Wales.
Split into simpler sentences: Following the end of the war, the 13th Battalion was demobilised in early 1919. It was re-raised in 1921 as a unit of the part-time Citizens Force, based around Maitland, New South Wales.