distinguished service cross (uk)

DISTINGUISHED SERVICE CROSS (UK)
The Distinguished Service Cross (DSC) is a third level military decoration awarded to officers, and since 1993 ratings and other ranks, of the British Armed Forces, Royal Fleet Auxiliary and British Merchant Navy, and formerly also to officers of other Commonwealth countries.

The DSC is "awarded in recognition of an act or acts of exemplary gallantry during active operations against the enemy at sea." Since 1979 it can be awarded posthumously.