World War II

During World War II, Callaghan earned eight bronze service stars on her Asiatic-Pacific Campaign Ribbon as follows:
1 Star ASIATIC-PACIFIC RAIDS — 1944
Truk attack: 16–17 February 1944.
Palau, Yap, Ulithi, Woleai raid: 30 March–1 April 1944.
Truk, Satawan, Ponape raid: 29 April–1 May 1944.
1 Star HOLLANDIA OPERATION
Aitape—Humboldt Bay—Tanahmerah Bay: 21–24 April 1944.
1 Star MARIANAS OPERATION
Capture and occupation of Saipan: 15 June–13 July 1944.
Capture and occupation of Guam: 22 July–2 August 1944.
1 Star WESTERN CAROLINE ISLANDS OPERATION
Capture and occupation of south Palau Islands: 6–24 September 1944.
1 Star LEYTE OPERATION
Third Fleet supporting operations for Okinawa attack: 10 October 1944.
Northern Luzon and Formosa attacks: 11–14 October 1944.
Luzon attacks: 15 October–16 December 1944.
Visayas attacks: 21 October 1944.
Battle of Surigao Strait: 24–26 October 1944.
1 Star LUZON OPERATION
Third Fleet supporting operations — Formosa attacks: 3–21 January 1945.
Third Fleet supporting operations — Luzon attacks: 6–7 January 1945.
Third Fleet supporting operations — China Coast attacks: 12–16 January 1945.
Third Fleet supporting operations — Nansei Shoto attacks: 22 January 1945.
1 Star IWO JIMA OPERATION
Fifth Fleet raids against Honshu and the Nansei Shoto: 15 February–1 March 1945.
Assault and occupation of Iwo Jima: 15 February–4 March 1945.
1 Star OKINAWA GUNTO OPERATION
Fifth and Third Fleet raids in support of Okinawa Gunto Operation: 24 March–30 May 1945.