M795 155 mm

M795 155 mm
Name	M795 155 mm
Type	High-explosive projectile
Origin	United States
Service	1980s–present
Used by	United States Army, United States Marine Corps, NATO
Weight	43.2 kg (95 lb)
Length	26.8 in
Caliber	155 mm
Filling	Composition B
Filling weight	6.86 kg
Detonation	Point-detonating or proximity fuze

M795 155 mm The M795 155 mm is a United States-produced high-explosive artillery projectile developed for use with 155 mm howitzers and self-propelled guns. It was created to replace earlier 155 mm rounds, offering improved range, lethality, and compatibility with modern fuzes and propellant systems. The round has been employed by American and allied forces in multiple conflicts and is integrated into NATO logistics and ammunition doctrines.

Development and Design

Development of the round took place within the context of Cold War modernization programs led by the United States Army, the U.S. Department of Defense, and contractors such as Frankford Arsenal and private firms engaged in ordnance engineering. The design process responded to lessons from the Vietnam War, the Yom Kippur War, and evolving NATO requirements articulated at meetings of the North Atlantic Treaty Organization and the U.S. Army Materiel Command. The M795 incorporated improvements in casing metallurgy, explosive formulations, and fuze compatibility derived from assessments by the Ballistic Research Laboratory and testing at proving grounds like Aberdeen Proving Ground and Yuma Proving Ground. Guidance from procurement offices such as the Defense Logistics Agency and technical standards from MIL-STD-2105 shaped the acceptance trials.

Specifications and Components

The projectile uses a 155 mm caliber steel body with a length and weight standardized for service with artillery platforms fielded by the United States Army Field Artillery School and the United States Marine Corps School. The explosive filler is Composition B, a formulation standardized in manuals maintained by the Ordnance Corps and evaluated by laboratories including the Lawrence Livermore National Laboratory for stability and performance. The nose houses either a point-detonating fuze or proximity fuze compatible with designs such as the M762 fuze and later proximity devices tested by teams from Picatinny Arsenal and Edgewood Arsenal. The rotating band is copper and meets metallurgy specifications used by defense contractors and overseen by inspectors from the Army Materiel Command.

Propulsion and Ballistics

Propulsion uses modular charge systems interoperable with charge bags and semi-fixed propellant configurations specified by the NATO Standardization Agreement (STANAG) framework and U.S. tables for the M198 howitzer, M777 howitzer, and self-propelled systems like the M109 Paladin. Ballistic performance was characterized in trials against firing tables maintained by the U.S. Army Test and Evaluation Command with data correlated to range-azimuth solutions produced by fire direction centers at units such as the 1st Cavalry Division and the 3rd Infantry Division. The round achieves extended ranges with enhanced charge sets, consistent with doctrines promulgated at training centers including the Fires Center of Excellence and incorporates aerodynamic features influenced by studies from the Aerospace Corporation.

Variants and Compatibility

Variants include baseline high-explosive versions and compatibility adaptations for proximity fuzes and special mission rounds used by allied arsenals in countries such as United Kingdom, Germany, South Korea, and Japan. Compatibility extends to NATO-standard 155 mm systems including the FH-70, Nora B-52, and modern gun systems fielded by the French Army and the German Army. Some derivative developments were coordinated with defense firms like BAE Systems and Rheinmetall under cooperative agreements guided by representatives from the Office of the Under Secretary of Defense for Acquisition and Sustainment.

Operational History and Use

The M795 entered service in the 1980s and has been used in operations including deployments linked to the Gulf War, the Iraq War, and operations in Afghanistan. Units from the 1st Armored Division, 2nd Brigade Combat Team, and multinational formations under Operation Desert Storm employed the projectile in counterfire and interdiction missions. Logistics and sustainment were managed through supply chains involving the Defense Logistics Agency, forward ammunition supply points coordinated by U.S. Army Europe and combat support elements attached to III Corps.

Performance and Effectiveness

Evaluations by the U.S. Army Test and Evaluation Command and after-action reports from formations such as the 82nd Airborne Division and 101st Airborne Division highlighted improvements in fragmentation patterns, blast effects, and consistency of fuze functioning compared with prior rounds like the M107 projectile. Effectiveness in interdiction, bunker defeat, and area suppression roles informed tactical doctrine updates at the Fires Center of Excellence and influenced subsequent munitions development programs funded by the Office of Naval Research and the Defense Advanced Research Projects Agency.

Category:155 mm artillery shells