 The Joint Service Commendation Medal was authorized on June 25, 1963 and is awarded in the name of the Secretary of Defense to members of the Armed Forces of the United States who, after January 1, 1963, distinguished themselves by meritorious achievement or service in a joint duty capacity.This award is intended for senior service on a joint military staff and is senior in precedence to service-specific Commendation Medals.As such, it is worn above the service Commendation Medals on a military uniform.