The word “Janissary” derives from the Turkish yeni cheri (yeni çeri, new
army). They were originally an infantry bodyguard of a few hundred men
using the bow and edged weapons. They adopted firearms during the
reign of Murad II and were perhaps the first standing infantry force
equipped with firearms in the world. Janissary firepower and discipline
turned the tide of numerous Ottoman battles, including Varna, Baskent,
Chaldiran, Marj Dabik, and Mohacs. The early adaptation of firearms indicates that there was no cultural or institutional opposition to them. The
Janissary corps expanded steadily through the sixteenth century, growing
from 18,000 in 1527 to 45,000 in 1597.