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)

“Stephen Gough (born c. 1959), also known as Steve Gough and the Naked Rambler, is an activist, and a British former Royal Marine. In 2003-2004, he walked the length of Great Britain naked. He did it again in 2005-2006, but was arrested in England and in Scotland. He subsequently spent six years in prison, having been repeatedly rearrested for public nudity within a short period, each time he was released. He has spent most of his sentences in Saughton and Perth prisons, in Scotland”. – Wikipedia

Photo: Stephen Gough the naked rambler makes his way south through Peebles in the Scottish Borders, following his release from Saughton Prison yesterday after serving his latest sentence on October 6, 2012 in Peebles, Scotland. (Photo by Jeff J. Mitchell)

A Thai performer puts his head inside a crocodile's mouth during a media preview performance as part of preparation to reopen Samutprakarn Crocodile Farm and Zoo in Samut Prakan province, Thailand, 19 March 2024. (Photo by Rungroj Yongrit/EPA)

People search for shells on a beach in Sittwe, Rakhine State, Myanmar, 17 September 2020. International Coastal Cleanup Day is observed annually on the third Saturday of September and will occur on 19 September this year. (Photo by Nyunt Win/EPA/EFE/Rex Features/Shutterstock)

A tank's barrel is seen on the course of the Tank Biathlon competition during the International Army Games 2016 in Alabino, outside Moscow, Russia, July 30, 2016. (Photo by Maxim Zmeyev/Reuters)

A supporter of former US President Donald Trump waits outside of Trump's President Day event at the Hilton Palm Beach Airport in West Palm Beach, Florida, on February 20, 2023. (Photo by Giorgio Viera/AFP Photo)

Mary McHugh mourns her slain fiance Sgt. James Regan at “Section 60” of the Arlington National Cemetery May 27, 2007. Regan, a US Army Ranger, was killed by an IED explosion in Iraq. (Photo by John Moore/Getty Images)

Oscar-winning directors Daniel Kwan and Daniel Scheinert, known collectively as the Daniels, march with Writers Guild of America members outside Sunset Bronson Studios and Netflix Studios, after union negotiators called a strike for film and television writers, in Los Angeles, California, U.S., May 3, 2023. (Photo by Mario Anzuoni/Reuters)