Vietnam War Picture: A Soldier With His Gas Mask On
A Marine with the 3nd Battalion, 7th Regiment sits patiently with his gas mask on as he waits to enter a VC tunnel 22 miles south of DaNang, Vietnam. (1968)
Explore 20th Century History
Must Reads
About.com Special Features
A Smarter Future
Tips that will help finance your education, excel in the classroom, and advance your career. More >
How to Ace the GRE
Being well prepared is the first step; here are more essential suggestions. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.