They Marched into Sunlight
First edition cover  | |
| Author | David Maraniss | 
|---|---|
| Language | English | 
| Genre | Vietnam, War, Historical Nonfiction | 
| Publisher | Simon & Schuster | 
Publication date  | September 28, 2004 | 
| Publication place | United States | 
| Media type | Hardcover and Trade Paperback | 
| Pages | 572 | 
| ISBN | 0-7432-6104-6 | 
| OCLC | 57225083 | 
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.