The Battle of Isfahan (simplified Chinese: 伊斯法罕之战; traditional Chinese: 伊斯法罕之戰; pinyin: Yīsīfǎhàn zhī zhàn) was a military engagement fought by the allied Roman army and the Abbasid army against the armies of Song Serica from September 1393 to March 1394 in the First SIlk War. Until this battle, gunpowder weapons had not been used in such a large scale.