Complex sentence: The unit arrived in Port Moresby only weeks after the start of the Pacific War and instead of recieving much needed further training the 39th was used for months to build defences and unload ships.
Split into simpler sentences: The unit arrived in Port Moresby only weeks after the start of the Pacific War. Instead of recieving much needed further training the 39th was used for months to build defences and unload ships.