The regiment has provided units and individuals for virtually all Australian Army deployments and operations since its formation. The first period of sustained operational service began with the regiment's first deployment in Korea in 1950 and continued until the withdrawal of combat units from Vietnam in 1972. These 22 years were arguably the most significant for the regiment with between one and three battalions involved in combat operations in South-East Asia at any one time. A second lengthy period of operational service commenced with the intervention in East Timor in 1999, which became the first of many commitments for the regiment that have continued to the present day. Approximately 85,000 personnel have served in the RAR during this time, with casualties sustained by the regiment on operations including 693 killed and over 3,000 wounded.