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| Marine Medium Helicopter Squadron 365 (HMM‑365) | |
|---|---|
| Unit name | Marine Medium Helicopter Squadron 365 (HMM‑365) |
| Dates | 1 September 1961 – present |
| Country | United States |
| Branch | United States Marine Corps |
| Type | Marine Corps aviation |
| Role | Medium-lift helicopter squadron |
| Garrison | Marine Corps Air Station Miramar |
| Nickname | "Blue Knights" |
| Battles | Vietnam War, Gulf War, Iraq War, War in Afghanistan |
Marine Medium Helicopter Squadron 365 (HMM‑365) is a United States Marine Corps helicopter squadron with a legacy of medium-lift assault support, expeditionary operations, and aviation logistics. The squadron, nicknamed "Blue Knights," has operated across multiple theaters, supporting III Marine Expeditionary Force, Marine Aircraft Group 16, 1st Marine Aircraft Wing, and other Marine Corps and joint formations in both combat and humanitarian missions. HMM‑365 has transitioned through several airframes and maintained a continuous presence in major late‑20th and early‑21st century operations.
HMM‑365 was commissioned during the Cold War amid expansion of United States Navy and United States Marine Corps aviation capabilities and was rapidly committed to the Vietnam War, supporting operations such as Operation Starlite, Tet Offensive, and air assault missions in support of I Marine Expeditionary Force and 3rd Marine Division. Post‑Vietnam, the squadron rotated through Marine Corps Base Camp Pendleton and Marine Corps Air Station El Toro, participated in Operation Desert Shield and Operation Desert Storm in 1990–1991 alongside II Marine Expeditionary Force and Task Force 58, and later supported stability operations in the Balkans and Somalia. In the 2000s HMM‑365 deployed in support of Operation Iraqi Freedom and Operation Enduring Freedom, integrating with 1st Marine Division, 2nd Marine Division, and Marine Expeditionary Unit contingents. The squadron later transitioned aircraft types, contributed to Pacific Airborne Operations, and participated in humanitarian relief after events such as the 2004 Indian Ocean earthquake and tsunami and Typhoon relief efforts in the Philippines.
HMM‑365's mission centers on medium‑lift assault support, vertical replenishment, casualty evacuation, and noncombatant evacuation operations. The squadron routinely supports Amphibious Ready Group deployments, Marine Expeditionary Unit operations, joint interoperability exercises such as RIMPAC, and bilateral engagements with partners including Japan Maritime Self-Defense Force, Royal Australian Navy, and Republic of Korea Marine Corps. HMM‑365 provides aviation support for aviation combat elements of Marine Air-Ground Task Force constructs, enabling expeditionary maneuver warfare, ship‑to‑shore movement, and humanitarian assistance/disaster relief missions.
HMM‑365 historically flew the Sikorsky UH-34 Seahorse in early years, later transitioning to the Sikorsky CH-46 Sea Knight for extended medium‑lift operations. In the 2010s the squadron moved to the MV-22B Osprey tiltrotor in coordination with Marine Medium Tiltrotor Squadron conversions, enhancing speed and range for assault support, casualty evacuation, and logistics. HMM‑365 employed avionics suites compatible with Navy/Marine Corps night operations, conducted interoperability with AIM-9 Sidewinder‑equipped platforms during joint exercises, and integrated with shipboard systems on Wasp-class amphibious assault ships and America-class amphibious assault ships during amphibious warfare operations.
HMM‑365 conducted sustained combat operations during the Vietnam War, executing troop lifts, resupply, and medevac in coordination with Combined Action Program elements and South Vietnam commands. During Operation Desert Storm the squadron supported Coalition forces logistics and troop movements across Saudi Arabia and Kuwait. In Iraq War rotations HMM‑365 provided assault support for Task Force Tarawa, Regimental Combat Team 1, and partnered Iraqi Security Forces in Al Anbar Governorate and other regions. Deployments to Afghanistan involved high‑altitude lift and CASEVAC in support of Operation Enduring Freedom alongside International Security Assistance Force units. HMM‑365 also executed noncombatant evacuation operations during crises in Lebanon and supported multinational humanitarian responses during natural disasters in the Asia-Pacific.
Over its history HMM‑365 earned multiple unit awards, including Presidential Unit Citation‑connected citations for specific campaigns, Navy Unit Commendation and Meritorious Unit Commendation recognitions for combat and noncombat deployments, and campaign streamers for service in Vietnam, the Persian Gulf War, Iraq, and Afghanistan. The squadron received commendations from joint commands, allied militaries, and theater commanders such as commanders of United States Central Command and United States Indo-Pacific Command for exemplary aviation support.
HMM‑365 is organized as a medium helicopter squadron under Marine Aircraft Group 16 and typically falls within the aviation combat element of a Marine Expeditionary Unit or Marine Aircraft Group structure. The squadron comprises aircrew, maintenance, logistics, and administrative sections, coordinated by a commanding officer holding the rank of Lieutenant Colonel (United States Marine Corps), an executive officer, and a sergeant major. Deployments integrate with ship squadrons aboard amphibious assault ships, operate from forward operating bases in theater, and liaise with joint staff elements such as Marine Corps Systems Command for sustainment and modernization.
Notable Marines assigned to HMM‑365 have included decorated aircrew and maintenance leaders who later served in senior billets within Naval Aviation, Marine Corps Aviation, and joint staffs, recipients of individual valor awards such as the Navy Cross, Silver Star, and Bronze Star Medal for actions during Vietnam War and later conflicts. Alumni have progressed to commands including Marine Aircraft Group 16, 1st Marine Aircraft Wing, and positions within Defense Intelligence Agency and Department of the Navy leadership.
Category:United States Marine Corps aviation squadrons Category:Military units and formations established in 1961