Complex sentence: Powell enlisted in the Corps on 17 August 1942 serving in the 2nd Battalion (Pioneer) 18th Marine Regiment of the 2nd Marine Division serving in the Battle of Tarawa and Battle of Saipan.
Split into simpler sentences: Powell enlisted in the Corps on 17 August 1942 serving in the 2nd Battalion (Pioneer) 18th Marine Regiment of the 2nd Marine Division. Powell fought in the Battle of Tarawa and Battle of Saipan.