"To Win a War"
During the earlier part of the last century, individual military equipment, particularly rifles, light machineguns, bayonets, et al were designed with one goal in mind:
To win wars- decisively, and permanently!
Infantrymen, right down to the squad-level, were trained to, and expected to, have the ability and will, using fire and maneuver, to seize objectives by force, killing most of the enemy, and driving off the rest, all with only their own, indigenous resources. "Take the high ground, and hold it! That's the job of the Infantry" We sang that during training!