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
Rudolf Hamburger route which involved a combination of buses and trains, but both Patra and Hamburger believed that this was unacceptably dangerous because of the war. The alternative route, approximately three times as long, involved travelling by ship to Hong Kong, from where it would be possible to take a flight to Chongqing, Chiang Kai-shek's wartime capital between 1937 and 1946. Hamburger intended then to follow a land route from Chongqing Xi'an. Although he had a large amount of luggage to take, Patra still insisted that Hamburger should travel with a radio transmitter-receiver so that they might stay in touch. The device