Complex sentence: With the Australian forces unable to advance, the Japanese withdrew during the night, and were transported, along with their equipment and supplies, by the two landing craft to Fergusson Island, where they arrived at dawn on the 25 October.
Split into simpler sentences: With the Australian forces unable to advance, the Japanese were able to withdraw during the night. They were transported, along with their equipment and supplies, by the two landing craft to Fergusson Island, where they arrived at dawn on the 25 October.