Great Sioux War of 1876 Col. George Armstrong Custer and the Seventh Cavalry were ordered out from the main Dakota Column to scout the Rosebud and Big Horn river valleys. On June 25, 1876, they encountered a large village on the west bank of the Little Bighorn. The US troops were seriously beaten in the Battle of the Little Bighorn and nearly 270 men were killed, including Custer. Custer split his forces just prior to the battle and his immediate command of five cavalry companies was annihilated without any survivors. Two days later, a combined force consisting of Colonel Gibbon's column, along with Terry's headquarters
Battle of the Little Bighorn out that lever-action rifles, after a burst of rapid discharge, still required a reloading interlude that lowered their overall rate of fire; Springfield breechloaders "in the long run, had a higher rate of fire, which was sustainable throughout a battle." The breechloader design patent for the Springfield's Erskine S. Allin trapdoor system was owned by the US government and the firearm could be easily adapted for production with existing machinery at the Springfield Armory in Massachusetts. At time when funding for the post-war Army had been slashed, the prospect for economical production influenced the Ordnance Board member selection of the