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When an American battalion was ambushed in close quarters, who were unable to use air and artillery support due to the close engagement of the North Vietnamese, the Americans suffered an over-50% casualty rate before being extricated. The second engagement involved the 2nd Battalion, 7th Cavalry Regiment plus supporting units under the command of Lieutenant Colonel Robert McDade, and took place on November 17 at LZ Albany. The Americans claimed LZ X-Ray as a tactical victory, citing a 10:1 kill ratio. Surrounded and under heavy fire from a numerically superior force, the American forces were able to drive back the North Vietnamese forces over three days, largely through the support of air power and heavy artillery bombardment, which the North Vietnamese lacked. LZ X-Ray involved the 1st Battalion, 7th Cavalry Regiment and supporting units under the command of Lieutenant Colonel Hal Moore, and took place November 14–16, at LZ X-Ray. Ia Drang comprised two main engagements, centered on two helicopter landing zones (LZs), the first known as LZ X-Ray, followed by LZ Albany, farther north in the Ia Drang Valley. Ia Drang set the blueprint for the Vietnam War with the Americans relying on air mobility, artillery fire and close air support, while the PAVN neutralized that firepower by quickly engaging American forces at very close range. It is notable for being the first large scale helicopter air assault and also the first use of Boeing B-52 Stratofortress strategic bombers in a tactical support role. The Battle of Ia Drang ( Vietnamese: Trận Ia Đrăng, in English / ˈ iː ə d r æ ŋ/) was the first major battle between the United States Army and the People's Army of Vietnam (PAVN), as part of the Pleiku Campaign conducted early in the Vietnam War, at the eastern foot of the Chu Pong Massif in the central highlands of Vietnam, in 1965. PAVN report: 554 killed and 669 wounded (~49% of troop strength)
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United States: 237 killed, 258 wounded, and 4 missing (~50% of troop strength) Separate 12.7 mm anti-aircraft gun and mortar units Separate aircraft and helicopter support units (740 bomber sorties F-4 and 96 B-52 sorties) were flown Total: ~1,000 U.S cavalry troops and ~900 ARVN troops
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Two batteries of artillery (included 24 M2 howitzers) ģAC Fleet/SAC South Vietnam Two battalions.Robert McDade, 2nd Battalion, 7th Cavalry Knowles 1st Air Cavalry Division Fwd CP : 210
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