
The M2 flamethrower was an American man-portable backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. It was the successor to the M1 and M1A1 flamethrowers. The M2 flamethrower's burn time was around 7 to 8 seconds, with a maximum firing range of 40 meters and an effective firing range of 20 meters. The user carried three bottles on their back: two 2-gallon gas oil bottles each and a half-gallon nitrogen bottle. The fuel consumption of the M2 flamethrower was 1.85 liters (half a gallon) per second.
| Characteristics | Values |
|---|---|
| Fuel | 14.8 litres (4 gallons) of gas and 7.4 litres (2 gallons) of nitrogen |
| Fuel consumption | 1.85 litres (half a gallon) per second |
| Burn time | 7-8 seconds |
| Maximum firing range | 40 metres |
| Effective firing range | 20 metres |
| Weight | 30 kilograms |
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What You'll Learn

Burn time: 7-8 seconds
The M2 flamethrower was an American man-portable backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. It was the successor to the M1 flamethrower, which saw combat in the Pacific Theatre during World War II. The M2 entered service in 1943 and offered several improvements over its predecessor, including a more reliable ignition system and an increased range of 20 to 40 metres.
The M2 flamethrower's burn time was approximately 7 to 8 seconds. This burn time was achieved through the use of two 2-gallon gas oil bottles and a half-gallon nitrogen bottle carried by the operator on their back. The total fuel capacity of the M2 flamethrower was 14.8 litres (4 gallons) of gas and 7.4 litres (2 gallons) of nitrogen, resulting in a fuel consumption rate of 1.85 litres (half a gallon) per second.
The short burn time of the M2 flamethrower was a limitation, but it was still considered a useful weapon due to its high firepower and effectiveness in reducing resistance in enclosed spaces. The introduction of flamethrower tanks also reduced the need for flamethrower-carrying infantrymen to expose themselves to enemy fire, making the M2 flamethrower relevant despite its short burn time.
To operate the M2 flamethrower, the operator would open the regulator valve and squeeze the back safety trigger to release the fuel from the tanks into the hose. Pulling the front trigger would then ignite the diesel fuel, causing a small flame to be released from the nozzle for approximately 7 to 8 seconds. This ignition process made the M2 flamethrower a simple and effective weapon despite its short burn time.
Overall, while the M2 flamethrower had a limited burn time of 7 to 8 seconds, it was still a valuable weapon in combat during World War II, the Korean War, and the Vietnam War due to its high firepower, improved range, and ability to engage targets in enclosed spaces without exposing the operator to enemy fire.
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Effective firing range: 20 metres
The M2 flamethrower was used by the Americans during World War II, the Korean War, and the Vietnam War. It was designed in 1940-41 and entered service in 1943, replacing the Flamethrower M1. The M2 has an effective firing range of 20 metres. This means that the user can reach a target at a distance of 20 metres for 7 seconds.
The M2 flamethrower's fuel consumption is 1.85 litres (one-half gallon) per second. This means that a full tank of fuel will last for approximately 4 seconds. The M2's fuel tank holds 14.8 litres (4 gallons) of gas and 7.4 litres (2 gallons) of nitrogen. The nitrogen is used to pressurize the fuel tank and propel the fuel out of the weapon.
The effective firing range of 20 metres is the distance at which the M2 flamethrower can be used effectively against a target. This range takes into account the fuel consumption rate, the duration of firing, and the accuracy of the weapon. Beyond 20 metres, the M2's effectiveness decreases due to the dispersion of the flame and the reduced accuracy of the stream.
The maximum firing range of the M2 flamethrower is 40 metres. This is the maximum distance that the flame can reach, but the effectiveness of the weapon at this range is limited. The M2 flamethrower is most effective when used within its effective firing range of 20 metres, where it can deliver a concentrated stream of flame onto a target.
The effective firing range of 20 metres is also a function of the M2's design and the user's ability to aim and control the weapon. The M2 flamethrower is carried on the user's back, with the fuel tanks and nozzle attached to a backpack frame. This allows for maneuverability but also exposes the user during the projection of the flames. The user must balance the weight of the equipment, the duration of firing, and the accuracy of their aim to effectively engage targets within the 20-metre range.
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Maximum firing range: 40 metres
The M2 flamethrower was an American man-portable backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. The M2 was the successor to the M1 and M1A1 flamethrowers. Its burn time was around 7 to 8 seconds, with a maximum firing range of 40 metres and an effective firing range of 20 metres.
The M2 flamethrower allowed for a particularly high firepower, which was useful in reducing isolated insulated resistance in bunkers or other enclosed spaces. The flamethrower's fuel consumption was 1.85 litres (half a gallon) per second. The user carried three bottles on their back: two 2-gallon gas oil bottles each and a half-gallon nitrogen bottle. The total weight of the M2 flamethrower in combat order was just over 30 kilograms.
The M2 flamethrower was considered a useful weapon despite its short burn time and limited range. With the arrival of flamethrower tanks, the need for flamethrower-carrying infantrymen to expose themselves to enemy fire was reduced. However, the M2 flamethrower still had some drawbacks. The shooter had to expose themselves during the projection of the flames, and the equipment made them vulnerable during combat phases. The fuel tanks were also vulnerable to enemy fire, which could result in an explosion and threaten the lives of soldiers in the vicinity.
The M2 flamethrower played a significant role in combating entrenched Japanese forces during World War II. The Japanese had constructed bunkers, pillboxes, and tunnel fortifications that were resistant to normal weapons. Soldiers and marines equipped with M2 flamethrowers were called in to sanitise these enemy positions. The fearsome power of the M2 flamethrower was so infamous that Japanese defenders chose to take their own lives rather than be burned alive.
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Fuel consumption: 1.85 litres per second
The M2 flamethrower is an American man-portable backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. It was the successor to the M1 flamethrower, which was used in the Pacific Theatre during World War II.
The M2 flamethrower's fuel consumption is 1.85 litres (half a gallon) per second. The flamethrower is operated by a user carrying three bottles on their back: two 2-gallon gas oil bottles each and a half-gallon nitrogen bottle. The total weight of the M2 flamethrower in combat order is just over 30 kilograms.
The M2 flamethrower's burn time is approximately 7 to 8 seconds, with a maximum firing range of 40 meters and an effective firing range of 20 meters. This burn time is significantly longer than its predecessor, the M1 flamethrower, which had a burn time of only 15 seconds.
The M2 flamethrower was considered a useful weapon despite its short burn time. Its ability to project flames over a distance of 20 meters for 7 seconds made it effective in reducing isolated insulated resistance in bunkers or other enclosed spaces. The introduction of napalm for use with the M2 also increased its lethality, as it could stick to most buildings and bunkers.
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Fuel capacity: 4 gallons
The M2 flamethrower is an American man-portable backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. The M2 was the successor to the M1 and M1A1 flamethrowers, which were found to be unreliable and lacking in effective tactics.
The M2 flamethrower has a fuel capacity of 4 gallons, consisting of two 2-gallon gas oil bottles and a half-gallon nitrogen bottle. The total weight of the M2 flamethrower in combat order is just over 30 kilograms. Its burn time is approximately 7 to 8 seconds, with a maximum firing range of 40 meters and an effective firing range of 20 meters.
The M2 flamethrower was considered a useful weapon despite its short burn time. With the arrival of flamethrower tanks, the risk to flamethrower-carrying infantrymen was reduced as they no longer needed to expose themselves to enemy fire. The M2 allowed for greater fire control and lethality due to the introduction of napalm, which could stick to most buildings and bunkers.
The M2 flamethrower played a significant role in sanitizing enemy positions during World War II, particularly in combating the entrenched Japanese forces in the Pacific campaign. The fearsome power of the M2 was such that Japanese defenders chose to take their own lives rather than be burned alive. However, one of the weaknesses of the M2 flamethrower was the vulnerability of the operator and nearby soldiers in the event of an explosion of the fuel tanks.
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Frequently asked questions
An M2 flamethrower uses 14.8 litres (4 gallons) of gas and 7.4 litres (2 gallons) of nitrogen.
The burn time of an M2 flamethrower is around 7 to 8 seconds.
The effective firing range of the M2 flamethrower is 20 metres, with a maximum firing range of 40 metres.
The M2 flamethrower weighs just over 30 kilograms.
The M2 flamethrower consumes fuel at a rate of 1.85 litres (half a gallon) per second.











































