Started with 4 spec ops. 2 of them had rifle at 95 and 96 and had another 2 of them at 75 and 78. Was pwning the whole match, and then I got tanks in, it survived all the way. All my spec ops died in honor when some tank wave came. It ended when I got arty wave and my tanks got blasted. (: AWESOME GAME!
I found another way to have a long lasting battle. Maybe it is because I got alot of badges, but I'm not sure. Have a tank at the later part of the wave when there are many soldiers. Your tank will level up fast and you'll be godly.
Having airborne troops is very worth because just 4 troops will cause you 12 points not counting in with airborne. Airbrone makes them look cooler and they have better guns. Go for airborne troops when there's lot of enemy, even though it seem suisicidal, it works.
Crap.. a bomb came and burned 12 gunners, 5 medics, 1 signaller, 1 engineer, 3 special ops, and 3 snipers which is my total force in 3 bunkers. My last force which contains only 5 soldiers was no match for the full force... which was hiding in only one bunker. MAN! DAMN BOMBS.