Submarine Squadron 4 (SUBRON 4

Submarine Squadron 4 (SUBRON 4) was raised at the Pearl Harbor submarine base in 1930.
During the Japanese attack on Pearl Harbor, HI, on 7 Dec 1941, the squadron was comprised of:
Submarine Squadron 4 Headquarters, at Pearl Harbor Submarine Base.
USS Litchfield (DD-336), underway south of Oahu – Tactical Flagship
USS Widgeon (ASR-1)

Submarine Division 41, at Naval Base San Diego.
USS S-18 (SS-123) (F)
USS S-23 (SS-128)
USS S-27 (SS-132), being overhauled at Mare Island Naval Shipyard
USS S-28 (SS-133), being overhauled at Mare Island Naval Shipyard
USS S-34 (SS-139)
USS S-35 (SS-140)

Submarine Division 42, at Pearl Harbor Submarine Base.
USS Argonaut (SM-1) (F), on patrol in the vicinity of Midway Atoll
USS Narwhal (SS-167) (F)
USS Nautilus (SS-168), at Mare Island Naval Shipyard
USS Dolphin (SS-169)
USS Cachalot (SS-170)
USS Cuttlefish (SS-171), being overhauled at Mare Island Naval Shipyard

Submarine Division 43, at Pearl Harbor Submarine Base.
USS Plunger (SS-179) (F), underway en-route from Mare Island Naval Shipyard
USS Pollack (SS-180), underway en-route from Mare Island Naval Shipyard
USS Pompano (SS-181), underway en-route from Mare Island Naval Shipyard
On 13 Jan 1943, the command of Submarine Base Pearl Harbor and Submarine Squadron 4 were separated, due to the demands on each command by war time operations.
In about Aug 1945, the squadron began operations from Key West, FL, as part of the US Atlantic Fleet.
In 1959, the squadron was moved to the Charleston Naval Base, SC. Its new home port was Pier Mike. The move was part of a plan to disperse the Atlantic Fleet so it would be less vulnerable to nuclear attack. The squadron soon came to be known as the “Swamp Fox squadron” in reference to Francis Marion, an American Revolutionary War general nicknamed the “Swamp Fox”.
The squadron was deactivated in late 1995 just prior to the official closure of Charleston Naval Shipyard on 1 Apr 1996.