With the United States’ entrance into World War I, three Army training bases were set up in South Carolina. The social and economic impact on a state still suffering from the devastation of the Civil War was dramatic. Three infantry divisions, including support personnel, swelled the Upstate and Midlands population by 90,000. On the coast, recruits flocked to Charleston’s Navy base. And some of those trainees were African Americans, which caused political turmoil and civil strife in a Jim Crow state.