Original German book of "The Tactical War Game (1876)" by Colonel Julius von Verdy du Vernois' update to the Kriegsspiel by von Reisswitz. This book specifically advocated for replacing the increasingly rigid system of charts and tables used to adjudicate wargames with a more flexible and fluid one in which umpires would determine the outcome based on their expertise. These concepts were released in the 1876 little book Beitrag zur Kriegsspiel.