sentences:  He was Director of Operations at Air Force headquarters from August 1976 to 1977 during which time Walsh was the senior air force officer directly involved in the execution of Operation Dingo.At the end of his tour he was appointed an officer of the Legion of Merit for service as Director of Operations and other previous command and staff tours.From 1978 to 1980, Walsh was Director General Operations and during this time the Rhodesian Air Force was renamed the Zimbabwe-Rhodesia Air Force.