This is an article for Vehicle based weapon, if you are looking for weapon used by the Imperial Engineer, please look at the Mortar Launcher page.

The Mortar Cannon a vehicle-mounted weapon used exclusively by the AT-RT and the ATD. It hurls a large, white-colored explosive projectile toward the targeting reticle, and will be sucked back towards the planet because of the gravity. These cannons are generally the main weapons, and are very similar to rockets, minus the gravity effects. For maximum effectiveness, aim higher than the target and let the arc set in.