Numbers 1:45

All the Israelites twenty years old or more who were able to serve in Israel's army were counted according to their families.

(New International Version)

So all the numbered men of the sons of Israel by their fathers' households, from twenty years old and upward, whoever was able to go out to war in Israel,

(New American Standard Bible)

So were all those that were numbered of the children of Israel, by the house of their fathers, from twenty years old and upward, all that were able to go forth to war in Israel;

(King James Version)