Here's When Gears of War Xbox One Backwards Compatibility Codes Start Going Out - GameSpot

If you bought the Ultimate Edition, you'll get codes for Gears of War 1-3 and Judgement starting soon.
Gears of War 3 is the conclusion to the Gears of War saga.

Xbox One - Wikipedia

Gears of War 3 - GameSpot

News - August, 2023

Gears of war Collection XBOX (GOW 1,2,3, Judgment)

Why won't my Xbox One play backwards compatible games?

Next Xbox One Backwards-Compatible Games Revealed, See Them Here

All Xbox One backward compatible games

E3 2017: Everything We Know About Xbox One X - GameSpot

Gears Of War Xbox 360 Backward Compatible Xbox one Bundled Mint

Gears of War 2 - GameSpot

Every Gears of War now part of Xbox One remaster thanks to

Gears Of War 4 Xbox One X Enhancements Detailed - GameSpot