I found this photo (which is a close-up so we can better see the comic) online as part of a Life magazine photo essay called "In Praise of Classic Comics." Check it out, there's some amazing stuff on display.
The comic in question is Sgt. Fury and His Howling Commandos #98, first on sale in February 1972. This photo was taken on the streets of Vietnam in 1973--I can only imagine what American war comics must have read like to a child at that time, in that place.