By keeping one’s feet flat and close to the ground, one minimizes the opportunity of catching a sniper’s bullet to the heel. The more one has cover and concealment, the better.
India should do the world a favor and unleash all its nuke arsenal on pakistan before pakistan knows it even exisists anymore... then israel should take out iran with a massive fury of hell raining down on the islamic empires.
on-toes gives the body a bit more motion; the longer shots are a bit more difficult. The more the body is like the ground, the steadier.
That and your Drill Instructor/SGT will kick you heels so hard you never forget.
It’s a strange phenomenon that when people shoot at you, your first instinct is to wet yourself. After that, you tend to only be able to do the things you’ve been trained to do under stress.