Reach the convoy to find the tank. When the shields are down, hijack it and take control. This tank is equipped with bavarium shields which can be activated by pressing L3. This gives the tank temporary invulnerability. The bavarium condensers need a few seconds to recharge so make sure to activate the shield whenever necessary. The tank is also fast and easy to control.
After crossing the bridge, you’ll encounter explosive barrel blockades. Activate the shield just before rammig them or destroy the barrels from a distance. Keep driving the tank and destroying any pursuers until you reach the rebel checkpoint. From there, carefully load the tank to the docked landing craft to complete the mission.