The conflict essentially ended in a stalemate in late 745.M41, as the Imperium was forced to conclude its military offensive early to deal with the encroaching Tyranid threat while the T'au sought to begin diplomatic negotiations with the Imperium to show humanity the benefits to be had by accepting the Greater Good.
The Damocles Gulf Crusade, also called the Damocles Crusade, was the first military conflict fought between the Imperium of Man and the rapidly expanding T'au Empire in the Lithesh Sector of the galaxy's Eastern Fringes between 742 and 745.M41. T'au Second Sphere Expansion ended Imperial retreat from Dal'yth