Whether they were done by fellow soldiers or opponents on a a battlefield makes little difference. The military culture, by necessity, encourages certain aggressive traits in men, and creates an environment that is often hostile to women.
If you want to try to redesign nature, try with something less vitally important to our national defense.
One thing I am afraid of is that if they will rape their own, then what will these men do when they have a non-combatant trapped in a room? One way our military distinquishes itself is that we have so few rapes and pilages. When the Russians crossed into Germany, they defined barbarians. We must rise above that to have God's blessings.