World War II

Mahan earned five bronze service stars on her Asiatic-Pacific Campaign Ribbon as follows:
1 Star PACIFIC RAIDS
Marshall–Gilbert raids: 1 February 1942.
1 Star SANTA CRUZ ISLANDS
26 October 1942.
1 Star EASTERN NEW GUINEA OPERATION
Lae occupation: 4–16 September 1943.
Finschhafen occupation: 22 September 1943.
Saidor occupation: 1 January–14 February 1944.
1 Star BISMARCK ARCHIPELAGO OPERATION
Arawe, New Britain: 28 December 1943–19 February 1944.
Admiralty Islands landings: 29 February–18 March 1944.
1 Star LEYTE OPERATION
Leyte landings: 29 October–3 November 1944.
Ormoc Bay landings: 7 December 1944.