Art Of War mod is partial-conversion modification adding lots of new features to old Zero Hour's gameplay, they are discussed in summary.
As Dr.Thrax's forces are mainly threatened by US troops, he developed as special chemical answer to them. This is a special version of Bomb Truck available only for Dr.Thrax is armed with a cistern of deadly acid. It's purpose is delivery of his toxic gift first to enemy's vehicles, tanks, fortifications and buildings. The explosive damage is not so drastic compared to usual Bombtruck, but the acid pollution can overdo it by far.
It is often called an "Evil Milker" by US troops for it's specific design.
Available at: Rank 3
Behavior: Explosive kamikaze unit
Main purpose: destruction of vehicles, tanks, base defense and buildings, acid pollution of territory
Additionally effective against infantry, but costly.