On August 10, 1946, Brigadier General Telford Taylor, the American Prosecutor, initiated one of the most severe cross-examinations of the trial. The emphasis was on Manstein's conduct as the commander of the German 11th Army from September 1941 to 1944. Taylor reads from an order dated July 23, 1941, signed by Keitel. Reference was also made to the Commissar Order and a specific order he endorsed. He struggled to remember these.