Nearly all United States-allied forces were armed with U.S. weapons including the M1 Garand, M1 carbine, M14 rifle, and M16 rifle. The Australian and New Zealand forces employed the 7.62mm L1A1 Self-Loading Rifle as their service rifle, with the occasional use of the M16 rifle.
The PAVN, although having inherited a variety of American, French, and Japanese weapons from World War II and the First Indochina War (aka French Indochina War), were largely armed and supplied by the People's Republic of China, the Soviet Union, and its Warsaw Pact allies. Further, some weapons—notably anti-personnel explosives, the K-50M (a PPSh-41 copy), and "home-made" versions of the RPG-2—were manufactured in North Vietnam. By 1969 the US Army had identified 40 rifle/carbine types, 22 machine gun types, 17 types of mortar, 20 recoilless rifle or rocket launcher types, nine types of antitank weapons, and 14 anti-aircraft artillery weapons used by ground troops on all sides. Also in use, mostly by anti-communist forces, were the 24 types of armored vehicles and self-propelled artillery, and 26 types of field artillery and rocket launchers.
During the early stages of their insurgency, the Viet Cong mainly sustained itself with captured arms (often of American manufacture)[1] or crude, self-made weapons (e.g. copies of the US Thompson submachine gun[2] and shotguns made of galvanized pipes). [3][4] Most arms were captured from poorly defended ARVN militia outposts.[5]
Communist forces were principally armed with Chinese and Soviet weaponry though some VC guerrilla units were equipped with Western infantry weapons either captured from French stocks during the first Indochina war, such as the MAT-49, or from ARVN units or requisitioned through illicit purchase.
By Autumn of 1967, all Viet Cong battalions were reequipped with arms of Soviet design such as the AK-47 battle rifle and the RPG-2 anti-tank weapon.[6] Their weapons were principally of Chinese[7] or Soviet manufacture.[8] The period up to the conventional phase in the 1970, the Viet Cong and NVA were mostly limited to mortars, recoilless rifles, and small-arms and had significantly lighter equipment and firepower relative to the US arsenal, relying on ambushes, with superior stealth, planning, marksmanship, and small-unit tactics to face the disproportionate US technological advantage.[9]
Many divisions within the NVA would incorporate armoured and mechanised battalions including the Type 59 tank, BTR-60, Type 60 artillery, and rapidly altered and integrated new war doctrines following the Tet Offensive into a mobile combined-arms force.[10] The North Vietnamese had both amphibious tanks (such as the PT-76) and light tanks (such the Type 62) used during the conventional phase. Experimental Soviet equipment started being used against ARVN forces at the same time, including Man-portable air-defense systemSA-7 Grail and anti-tank missiles including the AT-3 Sagger.[11] By 1975, they had fully transformed from the strategy of mobile light-infantry and using the people's war concept used against the United States.[10]
The American M16 rifle and XM177 carbine, which both replaced the M14, were lighter and considered more accurate than the AK-47 but in Vietnam was prone to "failure to extract", in which the spent cartridge case remained stuck in the chamber after a round was fired, preventing the next round from feeding and jamming the gun.[citation needed] This was ultimately traced to an inadequately tested switch in propellants from DuPont's proprietary IMR 4475 to Olin's WC 846, that Army Ordnance had ordered out of concern for standardization and mass production capacity.[citation needed]
The heavily armored, 90mm gun M48A3 'Patton' tank saw extensive action during the Vietnam War and over 600 were deployed with U.S. forces. They played an important role in infantry support though there were a few tank versus tank battles. The M67A1 flamethrower tank (nicknamed the Zippo) was an M48 variant used in Vietnam. The use of this euphemistically nicknamed tank should not be confused with the widespread use of actual Zippo lighters to burn villages, which gave rise to the nickname of "Zippo squads". (Far from all such squads fielded the tank.) The Zippo nickname was also applied to man-portable flamethrowers.[13] Artillery was used extensively by both sides but the Americans were able to ferry the lightweight 105mm M102 howitzer by helicopter to remote locations on quick notice.[14][15] With its 17-mile (27km) range, the Soviet 130 mm M-46 towed field gun was a highly regarded weapon and used to good effect by the PAVN. It was countered by the long-range, American 175mm M107 Self-Propelled Gun (nicknamed Miller).[16]
The United States had air superiority, though many aircraft were lost to surface-to-air missiles and anti-aircraft artillery. U.S. airpower was credited with breaking the siege of Khe Sanh and blunting the 1972 Easter Offensive against South Vietnam. At sea, the U.S. Navy had the run of the coastline, using aircraft carriers as platforms for offshore strikes and other naval vessels for offshore artillery support. Offshore naval fire played a pivotal role in the Battle of Huế in February 1968, providing accurate fire in support of the U.S. counter-offensive to retake the city.[17]
Colt Commander – used by US military officers and US Special forces.
Browning Hi-Power – used by Australian and New Zealand forces (L9 pistol).[30] Also used on an unofficial basis by US reconnaissance and Special Forces units.[31]
M14, M14E2, M14A1 – issued to most U.S. troops from the early stages of the war until 1967–68, when it was replaced by the M16.[41]
M16, XM16E1, and M16A1 – M16 was issued in 1964, but due to reliability issues, it was replaced by the M16A1 in 1967 which added the forward assist and chrome-lined barrel to the rifle for increased reliability.[42]
CAR-15 – carbine variant of the M16 produced in very limited numbers, fielded by special operations early on. Later supplemented by the improved XM177.
T223 – a copy of the Heckler & Koch HK33 built under license by Harrington & Richardson used in small numbers by SEAL teams. Even though the empty H&R T223 was 0.9 pounds (0.41kg) heavier than an empty M16A1, the weapon had a forty-round magazine available for it and this made it attractive to the SEALS.[34]
M1C/D Garand and MC52 – used by CIA advisors, the USMC and the US Navy early in the war.[47][48] About 520 were supplied to the ARVN and 460 to the Thai forces.[49]
Carl Gustaf m/45 – used by Navy SEALs in the start of the war, but later replaced by the Smith & Wesson M76 in the late 1960s. Significant numbers also used by MAC-V-SOG, South Vietnamese,[34] and small numbers in Laos by advisors, and Laotian fighters.
Smith & Wesson M76 – copy of the Carl Gustaf m/45; few were shipped to Navy SEALs fighting in Vietnam.[52]
Thompson submachine gun – used often by South Vietnamese troops, and in small quantities by US artillery and helicopter units.
Uzi – used by special operations forces and some South Vietnamese, supplied from Israel.[45]
Shotguns
Shotguns were used as an individual weapon during jungle patrol; infantry units were authorized a shotgun by TO&E (Table of Organization & Equipment). Shotguns were not general issue to all infantrymen, but were select issue weapons, such as one per squad, etc.
Stevens Model 77E – pump-action shotgun used by Army and Marine forces. Almost 70,000 Model 77Es were procured by the military for use in SE Asia during the 1960s.[64] Also very popular with the ARVN because of its small size.[65]
Colt Machine Gun – experimental light machine gun deployed by SEAL Team 2 in 1970.[34]
M1918 Browning Automatic Rifle – used by the ARVN during the early stages of the war,[69] as well as many that were airdropped into Laos and used by Laotian fighters.
RPD machine gun (and Type 56) – captured and used by reconnaissance teams of Mobile Strike Forces, MAC-V-SOG and other special operation forces. Also commonly modified to cut down the barrel.[46]
M1919 Browning machine gun (and variants such as M37) – vehicle mounted machine gun.[72] Meanwhile, still of use by many South Vietnamese infantry.[30]
M15 and M34 smoke grenades – filled with white phosphorus,[25] which ignites on contact with air and creates thick white smoke.[73] Used for signalling and screening purposes, as well as an anti-personnel weapon in enclosed spaces, as the burning white phosphorus would rapidly consume any oxygen, suffocating the victims.
M1/M2 rifle grenade adapters – used to convert a standard fragmentation grenade (M1) or smoke grenade (M2) into a rifle grenade when used with the M7 grenade launcher.
M203 grenade launcher – one-shot 40mm underslung grenade launcher designed to attach to an M16 rifle (or XM177 carbine, with modifications to the launcher). First tested in combat April 1969.[34][88]
Mk 20 Mod 0 grenade launcher – Automatic, belt-fed, 40x46mm grenade launcher. Used mostly by riverine crews but also by Air Force Special Operations.[90]
Bazooka – The M9 variant was supplied to the ARVN during the early years of the war,[92] while the M20 "Super Bazooka" was used by the USMC and the ARVN until the full introduction of the M67 90mm recoilless rifle and of the M72 LAW.[93]
BGM-71 TOW – wire-guided anti-tank missile used in 1972 by the US, and by the ARVN from 1972 to the end of the war.[94]
M18 recoilless rifle – 57mm shoulder-fired/tripod mounted recoilless rifle, used by the ARVN early in the war.[100]
M20 recoilless rifle – 75mm tripod/vehicle-mounted recoilless rifle, used by US and ARVN forces early in the war.[101]
M67 recoilless rifle – 90mm shoulder-fired anti-tank recoilless rifle, used by the US Army, US Marine Corps, ANZAC and ARVN selected forces.[101][102][103]
Agent Orange – While developed to be used as a herbicide to destroy natural obstacles and tree camouflage, it was later revealed that it posed health risks to those exposed to it.[212]
Agent Blue – Used to destroy agricultural land that was believed to be used to grow food for the VC/NVA.
In addition to cargo-carrying and troop transport roles, many of these vehicles were also equipped with weapons and sometimes armor, serving as "gun trucks" for convoy escort duties.[216]
other variants included helipad boats and tankers[262]
LCVP – Landing craft vehicle personnel, some made by the French Services Techniques des Construction et Armes Navales/France Outremer and known as FOM[262]
The geographically dispersed nature of the war challenged existing military communications. From 1965 to the final redeployment of tactical units, numerous communications-electronics systems were introduced in Vietnam to upgrade the quality and quantity of tactical communications and replace obsolete gear:
AN/PRT-4 and PRR-9 squad radios – replaced the AN/PRC-6.[265]
AN/VRC-12 series (VRC-43, VRC-45, VRC-46, VRC-47, VRC-48)[270] – FM radios that replaced the RT-66-67-68/GRC (including AN/GRC 3–8, VRC 7–10, VRC 20–22, and VRQ 1–3 sets).[265]
AN/GRC-106 – AM radios and teletypewriter that replaced the AN/GRC-19.[271]
The PAVN and the Southern communist guerrillas, the Viet Cong (VC) as they were commonly referred to during the war, largely used standard Warsaw Pact weapons. Weapons used by the PAVN also included Chinese Communist variants, which were referred to as CHICOM's by the US military. Captured weapons were also widely used; almost every small arm used by SEATO may have seen limited enemy use. During the early 1950s, US equipment captured in Korea was also sent to the Viet Minh.
Small arms
Hand combat weapons
A wide variety of bayonets meant for fitting on the many types of rifles used by the NVA and VC.
Walther P38 – Captured by the Soviets during World War II and provided to the VPA and the NLF as military aid[278]
Home-made pistols, such as copies of the M1911, Luger[281] or of the Mauser C96 (Cao Dai 763) or crude one-shot guns, were also used by the Viet Cong early in the war.[278][282]
Automatic and semi-automatic rifles
SKS (Chinese Type 56) semi-automatic carbine[283][284]
AK-47 – from the Soviet Union, Warsaw Pact countries, China and North Korea[283]
Older or rarer rifles were often modified by the Viet Cong early in the war: Gras mle 1874 carbines were rechambered to .410 bore while Destroyer carbines were modified to accept the magazine of the Walther P38.[294]
Home-made rifles, often spring-action rifles made to look like a M1 Garand or a M1 Carbine, were also used by the Viet Cong.[282]
Submachine guns
K-50M submachine gun (Vietnamese edition, based on Chinese version of Russian PPSh-41, under licence)[303]
MAT-49 submachine gun – Captured during the French-Indochina War. Many were converted from 9×19mm to 7.62×25mm Tokarev[34]
PPSh-41 submachine gun (both Soviet, North Korean and Chinese versions)[304][285]
PPS-43 submachine gun (both Soviet and Chinese versions)[305]
Truby, J. David (29 November 2013). "Early VC Small Arms". SmallArmsReview.com. Archived from the original on 7 February 2019. Retrieved 5 February 2019.
Grandolini, Albert (February 2013). "Objectif Saigon! 2e partie: Surprise sur les Hauts Plateaux". Batailles & Blindés (in French). No.53. Caraktère. pp.8–21. ISSN1765-0828.
Grandolini, Albert (April 2013). "Objectif Saigon! 3e partie: La chute du régime sud-vietnamien". Batailles & Blindés (in French). No.54. Caraktère. pp.66–79. ISSN1765-0828.
Gilbert, Ed (1 Jun 2006). The US Marine Corps in the Vietnam War: III Marine Amphibious Force 1965–75. Battle Orders 19. Osprey Publishing. ISBN9781841769875.
Grandolini, Albert (1998). Armor of the Vietnam War (2) Asian Forces. Armor at War 7017. Concord Publications. ISBN9789623616225.
Green, Michael (1996). Armor of the Vietnam war (1) Allied forces. Armor at War 7007. Concord Publications. ISBN9789623616119.