Call to Battle's melee combat was always intended to be more than just "swing and hope you hit first". This is evident by the blocking feature, which unfortunately hasn't worked. Turns out, there were plenty of other planned melee features that the resources just weren't available to add.
Back in WW2, squads for many nations were built around their Support - the guy with the LMG. With the squad being built around them, Rifleman would often have extra ammo for the LMG to ensure their support gunner would be able to continue laying down suppressing fire at the enemy.