Ian Gleeson

Ian Rimbault Gleeson SSA SD SM
Born	(1934-08-15) 15 August 1934 (age 82)
Allegiance	South Africa
Service/branch	South African Army
Years of service	–1990
Rank	Lieutenant General
Commands held	Chief of the Defence Force Staff Chief of Staff Operations Chief of Army Staff Operations GOC 101 Task Force 2 South African Infantry Battalion
Battles/wars	Battle of Cassinga
Awards	Star of South Africa (SSA) Southern Cross Decoration (SD) Southern Cross Medal (SM)
Other work	Author of the "Unknown Force"

Lieutenant General Ian Rimbault Gleeson SSA SD SM (born 1934) is a retired South African Army officer who served as Chief of the Defence Staff.

He graduated from the Military Academy after attending Christian Brothers College in Pretoria and joined the Army in 1954. He became Officer Commanding 2 South African Infantry Battalion in 1971 and in 1972 OC Walvis Bay military base, and in July 1976 became GOC 101 Task Force. He then became Chief of Army Staff Operations on 15 January 1978 before taking on the recreated post of Chief of Defence Force Staff.

He retired in February 1990.

General Gleeson has been awarded the following:

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