The Copperheads sometimes talked of violent resistance and in some cases started to organize. However, they never actually made an organized attack. As war opponents, Copperheads were suspected of disloyalty and their leaders were sometimes arrested and held for months in military prisons without trial. One famous example was General Ambrose Burnside's 1863 General Order Number 38, issued in Ohio, which made it an offence (to be tried in military court) to criticize the war in any way. The order was used to arrest Ohio congressman Clement L. Vallandigham when he criticized the order itself. However, Lincoln commuted his sentence while requiring his exile to the Confederacy.