Established on 1 July 1972, the Order of Military Merit honours conspicuous merit and exceptional service by members of the Canadian Forces, both Regular and Reserve. The Order includes three levels: Commander (CMM), Officer (OMM), and Member (MMM). 

The Officer level is awarded for outstanding meritorious service in duties of responsibility, usually to Majors to Colonels, with occasional Chief Warrant Officers or Chief Petty Officers First Class appointed by elevation. Recipients may use the post-nominal letters OMM. The Order is not awarded posthumously.

GGCHS Awarded 26 October 1999.