The tech mistake.
Y'see, give 2-3 grunts AP missile launchers, and fit the rest with standard weapons, no armor. I can almost guarantee you that you'll be able to field 10-20x more people...
Armor is great. Armor is nifty. Armor is useless without infantry support, and costs buckets too. Designing an armored tank for people with disabilities is a nifty idea, but would cost $$$ that could outfit a heck of a lot more people without disabilities to be just as effective. And right now, manpower is a lot cheaper than manufactured goods.
Was it here that I saw the comment on 2-3x F-5s versus 1 F-16? Where 3 F-5s = 1 dead F16, and F-5s cost 1/5 of an F-16?
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche