The initiation of military commission proceedings against Khalid Sheik Mohammad and four others for their alleged involvement in the 9/11 terrorist attacks has focused renewed attention on the differences between trials in federal court and those conducted by military commission. This report provides a brief summary of legal issues raised by the choice of forum for trying accused terrorists and a chart comparing selected military commissions rules under the Military Commissions Act, as amended, to the corresponding rules that apply in federal court.