"Most of the raids on Indian camps were conducted in the winter, when families would be together and could therefore all be killed at once. Sherman gave Sheridan "authorization to slaughter as many women and children as well as men Sheridan or his subordinates felt was necessary when they attacked Indian villages" (Fellman, p. 271). All livestock was also killed so that any survivors would be more likely to starve to death.
Sherman was once brought before a congressional committee after federal Indian agents, who were supposed to be supervising the Indians who were on reservations, witnessed "the horror of women and children under military attack." Nothing came of the hearings, however. Sherman ordered his subordinates to kill the Indians without restraint to achieve what he called "the final solution of the Indian problem," and promised that if the newspapers found out about it he would "run interference against any complaints about atrocities back East" (Fellman, p. 271).
Eight years into his war of "extermination" Sherman was bursting with pride over his accomplishments. "I am charmed at the handsome conduct of our troops in the field," he wrote Sheridan in 1874. "They go in with the relish that used to make our hearts glad in 1864-5" (Fellman, p. 272).
Another part of Sherman's "final solution" strategy against this "inferior race" was the massive slaughter of buffalo, a primary source of food for the Indians. If there were no longer any buffalo near where the railroad traveled, he reasoned, then the Indians would not go there either. By 1882 the American buffalo was essentially extinct."