In 1 Chronicles 5:18, these same Transjordan tribes had 44,760 warriors — the much larger number here shows expanded support for David.

In 1 Chronicles 26:32, David later appointed officials over these same Transjordan tribes, showing ongoing administrative organization.

Numbers 32:33-42 gives the land allotment to Reuben, Gad, and half-Manasseh — the very tribes listed as eastern warriors here.

Deuteronomy 3:12-16 describes the same eastern tribes' inheritance — Reuben, Gad, and half-Manasseh — matching this verse's troops.

Joshua 13:7-32 details the land given to Reuben, Gad, and half-Manasseh east of Jordan — exactly the tribes in this verse.

Joshua 14:3 notes Moses gave inheritance to the two and a half tribes east of Jordan — the same group as these warriors.

Joshua 22:1-10 recounts the eastern tribes (Reuben, Gad, half-Manasseh) returning to their land — the same tribes listed here.