Hamburger Hill researching the Battle of Hamburger Hill. Irvin, an English-born filmmaker, worked on several documentaries in Vietnam in 1969. Vincent Canby of "The New York Times" called "Hamburger Hill" a "well-made Vietnam War film that narrows its attention to the men of a single platoon in a specific operation." In differentiating the film from "Platoon", he noted the film "refuses to put its characters and events into any larger frame. It could have been made a week after the conclusion of the operation it recalls, which is both its strength and weakness, depending on how you look at it." Hal Hinson
Battle of Triangle Hill in China today. Battle of Triangle Hill The Battle of Triangle Hill, also known as Operation Showdown or the Shangganling Campaign (), was a protracted military engagement during the Korean War. The main combatants were two United Nations infantry divisions, with additional support from the United States Air Force, against elements of the 15th and 12th Corps of the People's Republic of China. The battle was part of American attempts to gain control of "The Iron Triangle", and took place from October 14 – November 25, 1952. The immediate American objective was Triangle Hill (), a forested ridge of high