The Battle of Crooked River. Rumors spread throughout the state that the Mormons are fighting back in strength. Citizens organize a militia under Samuel Bogart, who rides to drive the Mormons from the southern part of Caldwell County. When Captain David Patten (known as Captain Fear-Naught) hears this, he assembles 70 elders [Danites] and marches to Bogart's camp on the Crooked River. At dawn they attack and Bogart's men flee across the river. The Saints take the supplies left behind by the Missourians, but seven Saints are wounded and three eventually die, including Patten himself, the first martyred apostle.
Apostle Parley P. Pratt kills a militiaman, and wounds another who (while unconscious on the ground) is mutilated by enraged Danites.
[Conkling, Christopher J., Joseph Smith Chronology; Quinn, D. Michael, The Mormon Hierarchy: Origins of Power, Appendix 7: Selected Chronology of the Church of Jesus Christ of Latter-day Saints, 1830-47, http://amzn.to/origins-power]