USN

USS Nathan Hale (SSBN-623) was a Lafayette-class ballistic missile submarine commissioned by the United States Navy in 1963. Named after the American Revolutionary War hero Nathan Hale, she played a critical role in the U.S. strategic nuclear deterrent during the Cold War, conducting numerous deterrent patrols armed with Polaris and later Poseidon ballistic missiles. Throughout her service, the submarine contributed to the nation’s undersea deterrence force, ensuring a continuous at-sea presence. USS Nathan Hale was decommissioned in 1986 and subsequently scrapped as part of the Navy’s nuclear-powered ship recycling program.

USS Navasota (AO-106) was a Cimarron-class fleet oiler commissioned by the United States Navy in 1946. She played a crucial logistical role, supplying fuel to naval vessels during major operations, including the Korean War, Vietnam War, and Cold War deployments. Throughout her service, Navasota conducted numerous underway replenishments, ensuring sustained fleet operations across the Pacific and other theaters. After decades of distinguished service, she was decommissioned in 1975 and later transferred to the Military Sealift Command as USNS Navasota (T-AO-106), before being retired and scrapped.

USS Neosho (AO-143) was a Neosho-class fleet oiler commissioned by the United States Navy in 1954. Designed to support underway replenishment operations, Neosho played a crucial role in refueling ships at sea, enhancing the Navy's global reach during the Cold War. The vessel participated in numerous exercises and deployments, including Mediterranean and Atlantic operations, supporting both peacetime and crisis response missions. After decades of distinguished service, USS Neosho was decommissioned in 1992 and later struck from the Naval Vessel Register.

USS Nitro (AE-2) was an ammunition ship commissioned by the United States Navy in 1921. Serving primarily in the Atlantic and Mediterranean, Nitro played a crucial logistical role, supplying munitions to fleet units during both peacetime operations and World War II. During the war, she supported Allied forces by providing vital ordnance during key campaigns, including the invasions of North Africa and Southern France. After distinguished service, USS Nitro was decommissioned in 1945 and subsequently scrapped in 1949.

USS O’Brien (DD-725) was an Allen M. Sumner-class destroyer commissioned by the United States Navy in February 1944. She saw extensive action during World War II, participating in the Normandy Invasion, where she provided naval gunfire support and was damaged by enemy shore batteries. O’Brien later served in the Pacific, supporting operations at Leyte Gulf, Iwo Jima, and Okinawa, surviving a severe kamikaze attack in April 1945. After the war, she continued to serve through the Korean and Vietnam Wars before being decommissioned in 1972.

USS O'Callahan (DE/FF-1051) was a Garcia-class destroyer escort, later reclassified as a frigate, commissioned by the United States Navy in 1968. Named in honor of Chaplain Lieutenant Commander Joseph T. O’Callahan, a Medal of Honor recipient from World War II, the ship served extensively during the Cold War, conducting anti-submarine warfare operations and participating in training and goodwill missions across the Pacific. USS O'Callahan played a vital role in supporting U.S. naval presence, including operations off the coast of Vietnam in the early 1970s. She was decommissioned in 1989 and later transferred to the Pakistan Navy, where she served as PNS Aslat before being scrapped.

USS Observation Island (EAG-154) was originally built as a Mariner-class cargo ship and launched in 1953. In 1958, she was converted into a missile range instrumentation ship by the United States Navy, playing a key role in the development and testing of the Polaris submarine-launched ballistic missile (SLBM). Observation Island served as the platform for the first successful at-sea launch of a Polaris missile in 1960, marking a significant milestone in U.S. strategic deterrence. She continued to provide vital missile tracking and telemetry support for various missile programs throughout the Cold War before being decommissioned in 1994.

USS Parsons (DDG 33) was a Charles F. Adams-class guided missile destroyer commissioned by the United States Navy in 1961. Originally built as a Forrest Sherman-class destroyer (DD-949), she was converted and re-designated as a guided missile destroyer in 1966. Throughout her service, Parsons participated in major operations during the Vietnam War, providing naval gunfire support and plane guard duties for aircraft carriers. The ship continued to serve in the Pacific Fleet until her decommissioning in 1982, after which she was eventually scrapped.

USS Pawcatuck (AO-108) was a Cimarron-class fleet oiler commissioned by the United States Navy in 1946. Designed to provide vital underway replenishment of fuel and supplies to naval vessels, she served extensively during the Cold War, supporting both Atlantic and Mediterranean operations. Pawcatuck participated in numerous NATO exercises and played a crucial logistical role during events such as the Cuban Missile Crisis. She continued her service until being decommissioned in 1975, after nearly three decades of distinguished support to the fleet.

USS PICKING (DD-685) was a Fletcher-class destroyer commissioned by the United States Navy in 1943. She served with distinction in the Pacific Theater during World War II, participating in key operations such as the Leyte Gulf landings and the Battle of Okinawa. After the war, PICKING was decommissioned but later recommissioned for service during the Korean War, providing naval gunfire support and screening aircraft carriers. The ship continued to serve through the early years of the Cold War before being decommissioned for the final time in 1969.

USS Reasoner (DE/FF-1063) was a Knox-class frigate commissioned by the United States Navy in 1971. Named in honor of Marine First Lieutenant Frank S. Reasoner, a Medal of Honor recipient, the ship was initially designated as a destroyer escort (DE) before being reclassified as a frigate (FF) in 1975. Throughout her service, USS Reasoner participated in various operations, including anti-submarine warfare exercises and patrol missions during the Cold War, primarily in the Pacific and Indian Oceans. She was decommissioned in 1993 and later transferred to Turkey, where she served as TCG Kocatepe (F-257).

USS Recovery (ARS-43) was a Bolster-class rescue and salvage ship commissioned by the United States Navy in 1946. Designed for towing, salvage, and rescue operations, she served primarily in the Atlantic Fleet, supporting fleet exercises and assisting distressed vessels. Throughout her career, Recovery participated in notable missions, including recovery operations for downed aircraft and support during the space program by retrieving space capsules. After decades of service, she was decommissioned in 1994, leaving a legacy of dedicated support to naval operations and maritime safety.

USS Richard E. Kraus (DD-849) was a Gearing-class destroyer commissioned into the United States Navy in May 1946. Named in honor of Marine Private First Class Richard E. Kraus, a Medal of Honor recipient, the ship served extensively during the Cold War, participating in Atlantic and Mediterranean deployments and NATO exercises. Modernized under the Fleet Rehabilitation and Modernization (FRAM) program in the 1960s, she supported anti-submarine warfare operations and provided naval gunfire support during the Vietnam War. Decommissioned in 1976, the USS Richard E. Kraus was later transferred to the Hellenic Navy, where she served as Nearchos (D65) until 1994.

USS Roark (DE-1053) was a Knox-class destroyer escort commissioned by the United States Navy in 1970. Named in honor of Lieutenant William Marshall Roark, a naval aviator killed in action during the Vietnam War, the ship served primarily in the Pacific Fleet. Throughout the 1970s and early 1980s, USS Roark participated in numerous training exercises, patrol missions, and deployments to the Western Pacific, supporting U.S. interests during the Cold War. The vessel was decommissioned in 1991 and subsequently struck from the Naval Vessel Register.

USS Southerland (DD-743) was a Gearing-class destroyer commissioned by the United States Navy in December 1944. She served with distinction in the Pacific Theater during the final months of World War II, providing escort, anti-aircraft, and shore bombardment support. During the Korean War, Southerland supported United Nations forces with gunfire missions and patrol duties. She continued her service through the Vietnam War, participating in carrier escort and naval gunfire support operations before being decommissioned in 1981.

USS Stump (DD-978) was a Spruance-class destroyer commissioned by the United States Navy on 19 August 1978. Named after Admiral Felix Stump, the ship served primarily in the Atlantic and Caribbean, participating in numerous exercises, deployments, and operations, including enforcing sanctions during Operations Desert Storm and Desert Shield. USS Stump was recognized for its excellence in anti-submarine warfare and received multiple awards for its operational readiness and efficiency. After nearly 26 years of distinguished service, the destroyer was decommissioned on 22 October 2004 and later sunk as a target during naval exercises in 2006.

USS Tinosa refers to two submarines in the United States Navy, the most notable being USS Tinosa (SS-283), a Gato-class submarine commissioned in 1943 during World War II. Tinosa (SS-283) earned distinction for her aggressive patrols in the Pacific, sinking several enemy vessels and surviving numerous depth charge attacks. One of her most famous actions occurred during her second war patrol, when she encountered a Japanese tanker and experienced repeated torpedo malfunctions, highlighting critical flaws in U.S. torpedo design. After the war, Tinosa was decommissioned in 1953, having earned nine battle stars for her wartime service.

USS Truckee (AO-147) was a Neosho-class fleet oiler commissioned by the United States Navy in 1955. Designed to provide underway replenishment of fuel and supplies to naval vessels, Truckee played a vital logistical role during the Cold War, supporting operations in the Atlantic, Mediterranean, and Caribbean. The ship participated in numerous NATO exercises, crisis responses, and deployments, ensuring sustained fleet readiness. After nearly 35 years of distinguished service, USS Truckee was decommissioned in 1990 and later struck from the Naval Vessel Register.

USS Vicksburg (CG 69) is a Ticonderoga-class guided-missile cruiser commissioned into the United States Navy on November 14, 1992. Named after the Civil War Battle of Vicksburg, the ship has served as a key component of carrier strike groups, providing air defense, surface warfare, and maritime security. Vicksburg has participated in numerous operations, including support for Operation Southern Watch, Operation Enduring Freedom, and Operation Iraqi Freedom. The cruiser has also engaged in multiple multinational exercises, demonstrating the Navy's commitment to global partnerships and maritime stability.

USS Willamette (AO-180) was a Cimarron-class fleet replenishment oiler commissioned by the United States Navy in 1981. Designed to provide underway replenishment of fuel and supplies to naval vessels, she played a crucial support role in operations across the Pacific and Indian Oceans. Willamette participated in numerous exercises and deployments, including support for U.S. operations during the Gulf War. After over two decades of service, she was decommissioned in 1999 and later scrapped.

USS Windham County (LST-1170) was a tank landing ship of the United States Navy, commissioned in 1954. Named after counties in Connecticut and Vermont, she served primarily in the Atlantic and Pacific Fleets during the Cold War. The ship participated in numerous amphibious operations and exercises, including deployments to the Mediterranean and Far East, notably supporting operations during the Vietnam War. After decades of service, USS Windham County was decommissioned in 1973 and later transferred to the Turkish Navy.

**V-4** is not a widely recognized military unit designation in mainstream military history. If you are referring to a specific unit, such as those used in fictional works, lesser-known formations, or within a specific nation's military structure, please provide additional context. In some contexts, "V-4" may refer to the "Visegrád Group" (V4), an alliance of four Central European countries (Czech Republic, Hungary, Poland, and Slovakia) for military and political cooperation since 1991, but this is not a military unit per se. If you meant a different "V-4," please clarify for a more accurate history.

Attack Squadron 22 (VA-22), also known as the "Fighting Redcocks," was a distinguished attack squadron of the United States Navy. Originally established as Bombing Squadron VB-63 in 1948, it was redesignated as VA-22 in 1959. Throughout its service, VA-22 participated in several major conflicts, including the Korean War and the Vietnam War, flying aircraft such as the A-1 Skyraider and later the A-7 Corsair II. The squadron was renowned for its effectiveness in close air support and strike missions before it was disestablished in 1975.

Attack Squadron 27 (VA-27), known as the "Royal Maces," was a United States Navy attack squadron established on September 1, 1967. Initially flying the A-7 Corsair II, VA-27 participated in combat operations during the Vietnam War, conducting strike missions over North Vietnam. The squadron earned several commendations for its performance and professionalism in combat. VA-27 was disestablished on January 31, 1970, but the "Royal Maces" name and heritage were later reactivated by Strike Fighter Squadron 27 (VFA-27) in 1987.