OCS Portsea

Officer Cadet School, Portsea

The OCS Portsea Badge
Motto	Loyalty and Service
Type	former Military college
Established	1951–85
Location	Portsea, Victoria, Australia
Website	OCS Alumni website

The Officer Cadet School, Portsea (sometimes referred to as OCS Portsea) was an officer training establishment of the Australian Army. Established at Portsea in Victoria, Australia, in 1951 to provide training to officer cadets prior to commissioning, for many years OCS provided the Australian Regular Army with the bulk of its junior officers. However, following a review of military training establishments in Australia in the mid-1980s, the school was eventually closed in 1985, as the Royal Military College, Duntroon, assumed sole responsibility for training Army officers.

The motto of OCS Portsea was Loyalty and Service, which was chosen by Colonel (later Major General Sir) James Harrison during his time serving as OCS's first Commandant (1952–54).

OCS Portsea was located at Point Nepean near the mouth of Port Phillip Bay in Victoria, Australia. The land occupied by OCS was originally used as a quarantine station for many years, where newly arrived immigrants were housed before they could be screened for infectious diseases. When the quarantine station closed, the OCS took up the remainder of the land, although upon closure the land was re-allocated to the Army School of Health. In the late 1990s and early 2000s, the Defence presence on the land ended when the Army School of Health moved to Latchford Barracks, in Bonegilla, Victoria. In June 2009, the land was transferred to the Victorian government and has been incorporated into the Point Nepean National Park. In December 2009, the site was opened to the community as a public park and the Portsea location is now heritage listed, forming part of the greater Point Nepean National Park. Many of the old buildings were retained and some still stand today, having been protected under law. One of the buildings, which was used as a hospital, remains as a museum. OCS Cadets conducted lessons in a building previously used as a mortuary during the operation of the quarantine station. The Regimental Sergeant Major's hut is believed to be one of the oldest buildings in Victoria.