Mortars were weapons that fired explosive projectiles.

The Fourth Doctor killed a Rutan scout with a makeshift mortar at Fang Rock. (TV: Horror of Fang Rock)

The CyberKing had a mortar launcher on its right arm. (TV: The Next Doctor)

When Auderly House was attacked by the Daleks, the UNIT forces at the house used mortars to defend it. (TV: Day of the Daleks)

When the Third Doctor went to capture a brontosaurus, the Brigadier had his two of his soldiers set up a mortar in case he was attacked. They used the mortar when the Doctor was attacked by a tyrannosaurus rex, but it had no effect on the dinosaur. (TV: Invasion of the Dinosaurs)

A Roboform dressed as Santa Claus used a mortar disguised as a tuba. (TV: The Christmas Invasion)

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