A model walks the runway at the Iris Van Herpen Haute Couture autumn winter 2011 fashion show during Paris Haute Couture Week on July 4, 2011 in Paris, France. (Photo by Nathalie Lagneau/Catwalking/Getty Images)

Models walks the runway at the Stephan Pelger Show during Mercedes-Benz Fashion Week Berlin Spring/Summer 2012 at the Brandenburg Gate on July 9, 2011 in Berlin, Germany. (Photo by Gareth Cattermole/Getty Images for IMG)

Kate Upton walks the runway at the Beach Bunny Swimwear show during Merecdes-Benz Fashion Week Swim 2012 at The Raleigh on July 15, 2011 in Miami Beach, Florida. (Photo by Frazer Harrison/Getty Images for Beach Bunny)

A model walks the runway at the Elie Saab fashion show during Paris Fashion Week on March 9, 2011 in Paris, France.

South Korean prostitutes hide their identities as they participate in a rally on September 22, 2005 in Seoul, South Korea. Prostitutes rallied against government law aimed at the s*x industry. (Photo by Chung Sung-Jun/Getty Images)

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.

Photo: Man your battle stations: The crew chief of helicopter Yankee Papa 13, lance corporal James C. Farley, mans an M-60 machine gun during a mission near Da Nang, Vietnam on March 31, 1965. (Photo by Larry Burrows/Time & Life Pictures)

This is Raymond, an orphaned koala that was found abandoned beside a road in Brisbane, Australia. He was named after the man who found him.