the Isthmus of Corinth in 1446.

At the siege of Constantinople in 1453, the Ottomans used anywhere from 12 to 62 cannons, built at foundries that employed Turkish cannon founders and technicians, most notably Saruca and Orban. Most cannons at the siege were built by Ottoman engineers, including a large bombard by Saruca, while one cannon was built by Orban, who also contributed a large bombard. Ali's piece