"Hit the ground and brace yourself with your weapon!"
If this does not demonstrate to you the situation that confronts infantry units because of Iraq, nothing else can. (Hat tip to Kvatch.) The Houston Chronicle:
FORT JACKSON, S.C. — Navy sailors are trading their sea legs for dry land combat skills to help them survive in war zones, and the training is coming from an unusual place _ the Army.
The Navy is sending thousands of men and women to Iraq and Afghanistan to relieve pressure on Army and Marine ground forces, some of whom have faced repeated deployments to the region.
"Hit the ground and brace yourself with your weapon!" Army senior drill instructor Warren Brown yelled at a dozen Navy trainees slithering across a mud-soaked field. "Look around, pick yourself up and go! You're under fire!"