Comment by xarope

shooting a rifle is "easy" to learn. That's why long guns are used. Hold+brace, point, aim reticle/scope, squeeze.

handguns are harder, since you can't brace the stock against your shoulder, but need to learn how to brace with your wrists and arms.

anti-tank weapons a bit harder still, since you need to maneuver properly and have multiple shooters at the same target. Also, I laugh/smirk everytime I see a movie where someone uses a LAW indoors or in an enclosed space/with someone standing behind.

(I'm ignoring grenades; suffice to say it's not as easy to pull the pin with your teeth as you think)

I think the hard part isn't the shooting, but the tactical movement side; L shape ambush or fire formation when under fire, or presence of mind to seek to leapfrog or flank, ability to communicate under pressure instead of just hunkering down or screaming your head off. It gets complicated very fast since there are vastly different tactics used in forest/vegetation versus urban warfare, and choosing the wrong tactic will get you shot fast (think chess openings; choose the wrong one and unless you are an expert - which you will not be with 1 week of training, you will get mated fast).