What’s the lesson? don’t go incremental. If you go, go all in. All in saves lives, shortens the war, aids reconciliation. Incremental gets many more people killed, theirs as well as ours, it hardens hearts, and perpetuates the cycle of war after war.
BTW, check out Clint Eastwood’s movie, Heartbreak Ridge. Eastwood plays a throwback, dealing with the changed mores of the military and society. He shapes up a Marine scout platoon that’s sent to Grenada and they kick ass. The film stretches artistic license to bring together multiple vignettes of the actual invasion. For example, the bulldozer scene.
"This is the AK-47 assault rifle, the preferred weapon of your enemy - and it makes a very distinctive sound when fired at you, so remember it."