Tags: Military Structure.
Fort de Cavagnial (also known as Fort Cavagnolle or Post of the Missouri or Fort de la Trinité) was a French fort on the Missouri River somewhere between Kansas City Missouri and Fort Leavenworth Kansas from 1744 until about 1764.The fort named for Louisiana Governor Marquis de Vaudreuil-Cavagnial was the furthest west on the Missouri at the time.