Keith
Member
You example of the crouching target is a bit humorous. Targets are fleeting and hard to see on the battlefield. Often you will fire at a terrain feature, treeline etc. Not at a nice "E' or "F" silhouette standing out against the skyline.
The example of the crouching man was meant to illustrate that very point. Somebody had just made the silly suggestion that enemy soldiers were normally encountered standing up!
People in battle are hard to see because they are behind cover or face down in the dirt. You are more likely to hit them, and to do more damage to them, with a heavier round that penetrates cover and penetrates further through the body.