After the Malaysian naval forces emerged victorious against the Philippine navy in the Battle of the Sulu Sea, Malaysian vessels were sent, to carry and send troops for a land invasion of the southern Philippines, in what was known as Operation Suluk in Malaysia. The Malaysian invasion of Sulu happened concurrently with the invasion of Tawi-Tawi.
Though the Filipinos and Moro rebels shared a mutual hatred of Malaysia, they did not fight alongside each other. Though ironically, they did not engage in war against one-another, avoiding a triple-threat style battle. Morever, Filipino and Moro leaders alike independently decided to cooperate, to route out Malaysian offensives. Indonesians were also present in Jolo, aiding the Filipinos in the struggle against the invading Malaysians.
The Malaysian invasion was a failure, with most men being cut down on the beach landings.