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.

Individuals mentioned

Television documentary

The 2005 documentary film Two Days in October is based on the book and aired as part of the PBS series American Experience, winning a Peabody Award. In the UK, it was broadcast by BBC Four as How Vietnam Was Lost as part of the channel's Storyville series.

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