The Scorpian tank is the standard assault tank for the GLA. it has 1 barral and a week shot but when you get its upgrade which adds a rocket shot to them there twice as good and pretty good attackers. If you pick up unit parts it gets upgraded and can shot better shots more rapidly.
The technical is a fast infantry assault tank its really week has week fire power against tanks in its first mode but when you pick 1 tank part it gets upgraded to a heavy machine gun which is awesome against infantry and ok against tanks but when you pick up 2 tank parts you get a rocket no longer good against infantry but pretty good against tanks.
The rocket buggy can be a serious pain in the neck if it is not on your team. with the ability to shoot deadly rockets much farther then any other unit in the game, it can really annoy you the only thing that can stay out of its ranga and still hit it is the USA's strategy center with bombardment.Bombardment will delploy a cannoncabable of hitting almost anything if you build it near your deffence.
Quad cannons are what i like to think "better technicals" there the same design they bloth shoot but a quad cannon shoots alot more rapidly. when the quad cannon picks up 1 tank part it gets upgraded to have a much heavyer shot and when you get 2 tank parts it changes to have a more rapid fire.
These toxin tanks are really only good for 1 perpose... to kill infantry, there awesome cheme can kill any infantry in the game even colonel Burton
Here is some other tanks from the GLA tank line. The bomb truck is a sort of suicide attack method in my opinion VERY STUPID but still in some situations you need them. The attack moter cycle is very usefull if you need a builder in a certain area fast you put him on a moter bike if you want a small explosion put a demo man on a moter bike. Its almost a multi purpose vehicle. The attack bus just put a whole buch of rocket troops in it its deadly.
infantry
This is the standard attack infantry the Toxin version is the best.
This guy which i forgot the name of can sabotage enemy buildings.
The standard rocket soldier. garrision him in anything and hes AWESOME.
Best sniper in the game put him on a moter bike.
Ahh the Hijacker, hide a group outside an enemy base then when the tanks come....."CAPTURE!!!" and turn their wepons against them.
Throw one into a group of men, throw one into a tank,....throw a buch of'um into a building and you get..EXPLOSION.
Mobs are like as strong as Colonel Burton maby better. When you arm them with AK-47's they become to most deadly thing in the world killing a Command center in 3 seconds and even without AK-47's there still good.
USA
Tomahawks are the long range units of the USA they are great for attacking deffence.
medics are a great thing to have especialy when you have a larg group of them attacking always keep some of these near by.
The regular attack humvee. great for assisting infantry:garrison rocket soldiers in them to make a deadly attack humvee.
This tank can disrupt a building and power it down from a long ways away.
The centrey drone is a great spy its stealth and fast put it in the enamys base they will never know
infantry
the standard rocket soldier for USA.
Coloniel Burton is one of the best units in the game hes stealth can stab people blow things up and is the pride of the US infantry
standard USA assault infantry.
Air craft
the stealth bomber, although it may not be stealth it hauls all the most deadly wepons in the US army
The spectr gunship is a a huge ship that shoots barrages of missles and bullets down at the enemy
The combat chinook is a great way to deffend the trade and the $$$ just put some rocket soldiers in it, and its the most deadly air unit around
transports guys around and collects supplies.
The most deadly genral power it can thrash buildings fry infantry and soil tanks.