The article discusses how Gerhard von Scharnhorst influenced Clausewitz's idea of general friction in war. Scharnhorst was a skilled military leader and teacher who made important contributions during the War of the First Coalition. He showed Clausewitz the right path in understanding the challenges of war, particularly in dealing with obstacles and uncertainties on the battlefield. Scharnhorst's actions at the battle of Hondschoote and Menin demonstrated his strategic thinking and ability to turn difficult situations into victories.