Danger Room posts on An Introduction to Planetary DefenseA Study of Modern Warfare Applied to Extra-Terrestrial Invasion by Travis S. Taylor, Bob Boan, R.C. Anding, and T. Conley Powell.
Act like Iraqis, and launch “an insurgency, a mujahideen-type resistance,” against an alien invasion.
As Iraqi dead-enders and Afghan mujahideen know, though, it helps tremendously to have someone outside providing you with money, explosively-formed penetrators, and Stinger missiles.
I’ll bet that’s a very interesting book, though. Go read more in the Danger Room.