18 The sons of Reuben, the Gadites, and the half-tribe of Manasseh, of valiant men, men able to bear buckler and sword, and to shoot with bow, and skillful in war, were forty-four thousand seven hundred sixty, that were able to go out to war.
1 Chronicles 5:18 Cross References - WEB
Numbers 1:3
3 from twenty years old and upward, all who are able to go out to war in Israel. You and Aaron shall count them by their divisions.