In the lead-up to the Japanese invasion of Java a force of 242 carrier- and land-based aircraft attacked Darwin on 19 February 1942. At the time Darwin was an important base for Allied warships and a staging point for shipping supplies and reinforcements into the NEI. The Japanese attack was successful, and resulted in the deaths of 251 civilians and military personnel, most of whom were non-Australian Allied seamen, and heavy damage to RAAF Base Darwin and the town's port facilities.