 During the Indonesia–Malaysia confrontation in Borneo, Large took part in Operation Claret.As the leader of a four-man SAS patrol, he spent up to two weeks at a time hidden in the jungle on deniable incursions into Indonesia, performing reconnaissance or ambushing Indonesian forces.While hidden on the banks of the Sungei Koemba River during one of these incursions, Large and his patrol had the opportunity to assassinate Colonel Leonardus Moerdani, the commander of the Indonesian special forces in the area (and later Commander-in-Chief of the Indonesian Armed Forces and subsequently Indonesia's Minister of Defence and Security), who was passing by on a river boat.