retd
adjective [ after noun ]
退休的（retired的缩写）
written abbreviation for retired
written abbreviation（用于已退役的军人名字后）退伍的，退役的
used after someone's name to show that they are no longer in one of the armed forces
The meeting will be chaired by Colonel E. Smith (retd). 会议将由 E.史密斯上校（已退役）主持。