Complex sentence: At this time the 53rd Battalion was re-raised around Sydney, the area from where many of the battalion's original recruits in 1916 had come and so in 1927, when territorial designations were adopted, it became the 53rd Battalion (West Sydney Regiment).
Split into simpler sentences: At this time the 53rd Battalion was re-raised around Sydney, the area from where many of the battalion's original recruits in 1916 had come. In 1927, when territorial designations were adopted, it became the 53rd Battalion (West Sydney Regiment).