The American Army of the WW2 era adopted the fire and movement technique for a few simple reasons.
- It is easy to teach, learn and put into practise in a short amount of time.
- Practising and using the technique gave green soldiers confidence to move on a battlefield.
When it comes to the game I hardly see anyone adopting this tactic. I see people running around with the MG, not using it for covering advancing riflemen. You see clumps of riflemen staying back sniping while no one moves forward.
If you see somone crossing open ground, lay fire at any area you think an enemy may be, doorway, window or mound of rubble. If your amongst a group of sniping infantry move forward under their cover fire. Many maps are lost from people being to tentative to run grenades throwing at an objective while a MG lashes it with aggresive fire. If you are banging your head against a good defence find anohter way around.This is how most assaults took place on enemy positions. It wasn't elegant but it worked. Try it out and encourage teamates to think about this simple but proven tactic.