May 12, 2014 11:18 AM EDT

In the spring of 1965, within weeks of 3,500 American Marines arriving in Vietnam, a 39-year-old Briton named Larry Burrows began work on a feature for LIFE magazine, chronicling the day-to-day experience of U.S. troops on the ground—and in the air—in the midst of the rapidly widening war. The photographs in this gallery focus on a calamitous March 31, 1965, helicopter mission; Burrows’ “report from Da Nang,” featuring his pictures and his personal account of the harrowing operation, was published two weeks later as a now-famous cover story in the April 16, 1965, issue of LIFE.

Over the decades, of course, LIFE published dozens of photo essays by some of the 20th century’s greatest photographers. Very few of those essays, however, managed to combine raw intensity and technical brilliance to such powerful effect as “One Ride With Yankee Papa 13″—universally regarded as one of the greatest photographic documents to emerge from the war in Vietnam.

Larry Burrows—Time & Life Pictures/Getty Images

Here, LIFE.com presents Burrows’ seminal photo essay in its entirety: all of the photos that appeared in LIFE are here.

(Left: In a picture from the article, Burrows mounts a camera to a special rig attached to an M-60 machine gun in helicopter YP13 — a.k.a., “Yankee Papa 13.” At the end of this gallery, there are three previously unpublished photographs from Burrows’ 1965 assignment.]

Burrows, LIFE informed its readers, “had been covering the war in Vietnam since 1962 and had flown on scores of helicopter combat missions. On this day he would be riding in [21-year-old crew chief James] Farley’s machine—and both were wondering whether the mission would be a no-contact milk run or whether, as had been increasingly the case in recent weeks, the Vietcong would be ready and waiting with .30-caliber machine guns. In a very few minutes Farley and Burrows had their answer.”

The following paragraphs—lifted directly from LIFE—illustrate the vivid, visceral writing that accompanied Burrows’ astonishing images, including Burrows’ own words, transcribed from an audio recording made shortly after the 1965 mission:

In his searing, deeply sympathetic portrait of young men fighting for their lives at the very moment America is ramping up its involvement in Southeast Asia, Larry Burrows’ work anticipates the scope and the dire, lethal arc of the entire war in Vietnam.

Six years after “Yankee Papa 13” ran in LIFE, Burrows was killed, along with three other journalists—Henri Huet, Kent Potter and Keisaburo Shimamoto—when a helicopter in which they were flying was shot down over Laos in February, 1971. He was 44 years old.


Ben Cosgrove is the Editor of LIFE.com


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