Complex sentence: On the 9th December 1941, two day after the Japanese attack on Pearl Harbor, the 39th BN was ordered to'ready to move', they were originally allocated to relieve the Queensland 49th Battalion already on garrison duties at Port Moresby, Papua.
Split into simpler sentences: On the 9th December 1941, two day after the Japanese attack on Pearl Harbor, the battalion was ordered to'ready to move'. They were originally allocated to relieve the Queensland 49th Battalion already on garrison duties at Port Moresby, Papua.