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Events on Thursday 28 May 1857 1
1857Utah War beginsUS federal troops march against Mormon settlersPresident James Buchanan ordered US Army troops to Utah Territory to suppress a reported rebellion by Mormon settlers and install a non-Mormon governor. The ensuing standoff between federal forces and the Nauvoo Legion militia produced skirmishes but little bloodshed before a negotiated settlement in 1858. It was one of the costliest peacetime military mobilizations in antebellum US history.