
The ATT-1 tanks had a weakness against missile guided launchers.

The Republic garrison had 6 TX-130T tanks that were armed with dual-guided missile launchers that were very useful against the ATT-1 Droid Tanks. The occupants of the city were neutral and did not take sides in the battle, unless attacked. This made it very hard for the Droid army to attack the city.

The Separatist attacked Mos Osnoe with the orders to destroy only the space port and not to destroy the city or harm the occupants by request of the Hutts in exchange for information on the Decimator plans location.
