Who were the Tartar army?

Answer 1

During the 14th century, the Tartar army was besieging the city of Kaffa (present day Feodosia in the Ukraine) used a combination of psychological warfare and bio-warfare (Mayor A. 1997). The Tartars catapulted bodies of plague victims over the walls of Kaffa in order to initiate an epidemic upon the residents. This gave the Tartars a greater advantage over the Kaffa army in 1346 (Kornpeter M. G. 2001). This same tactic would be used several times throughout Europe's history.