The Battle of Aidabasalala (16 October 1999) was a small but hard fought action during the 1999 East Timorese crisis between pro-Indonesian militia, and a small six-man Australian covert reconnaissance patrol from the Special Air Service Regiment (SASR) operating as part of the United Nations-mandated International Force for East Timor (INTERFET). The battle took place near Aidabasalala, 15 kilometres (9.3 mi) from the West Timor border, and saw the Australians repeatedly attacked in a series of fire-fights by a group of more than 20 militia.