[PAR] [TLE] M1917 Browning machine gun [SEP] The M1917 Browning machine gun is a heavy machine gun used by the United States armed forces in World War I, World War II, Korea, and to a limited extent in Vietnam; it has also been used by other nations.  It was a crew served, belt-fed, water-cooled machine gun that served alongside the much lighter air-cooled Browning M1919.  It was used at the battalion level, and often mounted on vehicles (such as a jeep).  There were two main iterations of it: the M1917, which was used in World War I; and the M1917A1; which was used thereafter.  The M1917, which was used on some aircraft as well as in a ground role, had a cyclic rate of 450 rounds per minute; the M1917A1 had a cyclic rate of 450 to 600 rounds per minute. [PAR] [TLE] M18 recoilless rifle [SEP] The M18 recoilless rifle was a 57 mm shoulder fired anti-tank recoilless rifle used by the U.S. Army in World War II and the Korean War.  Recoilless rifles are capable of firing artillery-type shells at reduced velocities comparable to those of standard cannon, but with greater accuracy than anti-tank weapons that used unguided rockets, and almost entirely without recoil.  The M18 was a breech-loaded, single-shot, man-portable, crew-served weapon.  It could be used in both anti-tank and anti-personnel roles.  The weapon could be both shoulder fired or fired from a prone position.  The T3 front grip doubled as an adjustable monopod and the two-piece padded T3 shoulder cradle could swing down and to the rear as a bipod for the gunner.  The most stable firing position was from the tripod developed for the water-cooled Browning M1917 machine gun.
[PAR] [TLE] M1917 Browning machine gun [ SEP ] The M1917 Browning machine gun is a heavy machine gun used by the United States armed forces in World War I , World War II , Korea , and to a limited extent in Vietnam ; it has also been used by other nations . It was a crew served , belt - fed , water - cooled machine gun that served alongside the much lighter air - cooled Browning M1919 . It was used at the battalion level , and often mounted on vehicles ( such as a jeep ) . There were two main iterations of it : the M1917 , which was used in World War I ; and the M1917A1 ; which was used thereafter . The M1917 , which was used on some aircraft as well as in a ground role , had a cyclic rate of 450 rounds per minute ; the M1917A1 had a cyclic rate of 450 to 600 rounds per minute . [PAR] [TLE] M18 recoilless rifle [ SEP ] The M18 recoilless rifle was a 57 mm shoulder fired anti - tank recoilless rifle used by the U.S. Army in World War II and the Korean War . Recoilless rifles are capable of firing artillery - type shells at reduced velocities comparable to those of standard cannon , but with greater accuracy than anti - tank weapons that used unguided rockets , and almost entirely without recoil . The M18 was a breech - loaded , single - shot , man - portable , crew - served weapon . It could be used in both anti - tank and anti - personnel roles . The weapon could be both shoulder fired or fired from a prone position . The T3 front grip doubled as an adjustable monopod and the two - piece padded T3 shoulder cradle could swing down and to the rear as a bipod for the gunner . The most stable firing position was from the tripod developed for the water - cooled Browning M1917 machine gun .
What was the earliest war to use both the M18 and the M1917?
What was the earliest war to use both the M18 and the M1917 ?
World War II
World War II