Lt. (jg.) Arnold Marcus, born in Atlantic City, N.J., 26 June 1892, was appointed a midshipman 22 May 1909. He assumed command of submarine A‑7, 13 March 1917. On 27 July 1917, Lieutenant (jg.) Marcus died from injuries suffered during an explosion on A‑7, while the submarine was on patrol in Manila Bay, Philippine Islands. He was the last man to leave the ship, remaining on board to insure the safe evacuation of his crew and to attempt the grounding of his ship to prevent sinking. In so doing he upheld the highest traditions of the Navy.
(DD‑321: dp. 1,190; l. 314'5"; b. 31'8"; dr. 9'4" (mean); s. 35 k.; cpl. 122; a. 4 4", 13", 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 Islandsí 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 1929 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.