 A riot erupted, and Lyon's troops, a Missouri militia mainly composed of German immigrants, opened fire on the attacking crowd, killing 28 people and injuring 100.The next day, the Missouri General Assembly authorized the formation of a Missouri State Guard with Major General Sterling Price as its commander to resist invasions from either side (but initially from the Union Army).William S. Harney, federal commander of the Department of the West, moved to quiet the situation by agreeing to Missouri neutrality in the Price-Harney Truce.