(DD-321: dp. 1 190; 1. 314" 3"; b. 31'8"; dr. 9'4" (mean); s. 35 k.; cpl. 122; a. 4 4" 1 3" 4 21" tt.; cl Clemson.)

Marcus(DD-321) was laid down 20 May 1919 by the Bethlehem Shipbuilding Corp. San Francisco Calif.; launched 22 August 1919; sponsored by Mrs. Arnold Marcus, widow of Lieutenant ( jg. ) Marcus; and commissioned 23 February 1921, Lt. Comdr. C. E. Rosendahl in command.

Marcus, after completion of her shakedown cruise, was assigned to destroyer squadron duty with the Pacific Fleet As a unit of Squadron 13, and later Squadron 12 she operated off the west coast, her cruises ranging from Seattle to Panama. In early 1924, February-March, she joined other ships of the battle force in fleet maneuvers based on a simulated attack on the Panama Canal. From April through July, 1925 she participated in fleet tactical problems in the Hawaiian Islands' area. She then returned to her regular operations schedule until 1927. During March and April of that year she again sailed south to take part in Caribbean fleet maneuvers, following which she returned to the west coast. Between 1927 and 1920 she made several voyages to Honolulu; one a Naval Reserve training cruise, two others as carrier screen.

In September 1929, Marcus was ordered to San Diego where she decommissioned 31 May 1930. Disposed of in accordance with the terms of the London Naval Treaty, she was struck from the navy list 28 January 1935 and sunk by gunfire 25 June 1935.