During the conflict 22 people were killed ( three Mormons and one non-Mormon at Battle of Crooked Creek , one Mormon prisoner fatally injured while in custody , and 17 Mormons at Haun ’s Mill ) and an unknown number of non-combatants died due to exposure and hardship as a result of being expelled from their homes in Missouri . All of the conflicts in the Mormon War occurred in a corridor to the east and northeast of Kansas City
Haun ’s Mill
Haun's Mill massacre
1838 Mormon War