Dominion Wars of the 2360s

In an alternate timeline in which Khan Noonien Singh won the Eugenics Wars and Humanity underwent genetic engineering en masse, the Dominion Wars of the 2360s were a series of  conflicts fought between the Khanate of Earth and the Dominion during the mid 24th century.

During the wars, the Dominion staged numerous attacks in the Alpha Quadrant which had cost the Khanate dearly. Among the casualties were libraries of contemporary history, meaning that the Children of Khan possessed only fragmentary knowledge of the history of the late 20th and 21st centuries. However, the survival of any records of Earth's ancient cultures was credited to Khan's interest in his ancestors.

At one point, Tiberius Sedans Singh realized that the Jem'Hadar soldiers weren't strong enough who had no match with any of the Khanate warriors. Eventually they managed to overpowered the Jem'Hadar as well as the Vorta all the way to the Founders' homeworld and succeeded to overthrow the Dominion once and for all, as they would eventually take over the Gamma Quadrant.

Tiberius eventually led his people to victory over the Dominion, and their entire territory was conquered.