They Marched into Sunlight

They Marched into Sunlight: War and Peace, Vietnam and America, October 1967 is a 2004 book written by David Maraniss. The book centers around the Battle of Ong Thanh and a protest at the University of Wisconsin–Madison.
It was a finalist for the Pulitzer Prize for History in 2004, and won the J. Anthony Lukas Book Prize that same year.
Television documentary.
The 2005 documentary film, "Two Days in October", was based on this book, and produced as part of the PBS series "American Experience" during season 18. It won a Peabody Award. In the UK, it was also broadcast by BBC Four as "How Vietnam was Lost", as part of the channel's "Storyville" series.
Film adaptation.
At one point, both Tom Hanks and Gary Goetzman had the rights for making a feature film version of Maraniss's book. Their production company Playtone was very interested in having Paul Greengrass ("United 93", "The Bourne Ultimatum") direct the film.