The Great Raid of 1840 was the largest raid ever mounted by Native Americans on white cities in what is now the United States. It followed the Council House Fight, in which Republic of Texas officials attempted to capture and take prisoner 33 Comanche chiefs who had come to negotiate a peace treaty, killing them together with two dozen of their family and followers. The Texas Officials were determined to force the Comanche to release all white captives among them. To avenge what the Comanche viewed as a bitter betrayal by the Texans, the Comanche war chief Buffalo Hump raised a huge war party of many of the bands of the Comanche, and raided deep into white-settled areas of Southeast Texas.