World War II

Johnston earned six bronze service stars on her Asiatic-Pacific Campaign Ribbon as follows:
1 Star MARSHALL ISLANDS OPERATION
Occupation of Kwajalein and Majuro Atolls: 31 January–8 February 1944.
Occupation of Eniwetok Atoll: 17–25 February 1944.
1 Star CONSOLIDATION OF NORTHERN SOLOMONS
31 March 1944.
1 Star ANTISUBMARINE OPERATIONS
16 May 1944.
1 Star MARIANA ISLANDS OPERATION
Capture and occupation of Guam: 21 July–9 August 1944.
1 Star WESTERN CAROLINE ISLANDS OPERATION
Capture and occupation of South Palau Islands: 6 September–14 October 1944.
1 Star LEYTE OPERATION
Leyte landings: 24 October–29 November 1945.