With secession, numerous federal forts, along with Fort Sumter in South Carolina, all at once became outposts in a foreign land. Abraham Lincoln made the choice to ship fresh materials to the beleaguered garrisons. On April 12, 1861, Confederate warships turned back the supply convoy to Fort Sumter and opened a 34-hour bombardment on the stronghold. The garrison surrendered on April 14. The Civil War was now underway.