Editing Wargame (section)

===''Kriegsspiel'' (1824)===
{{Main|Kriegsspiel}}
[[File:Kriegsspiel 1824.jpg|thumb|right|A reconstruction of the wargame developed in 1824 by Reisswitz]]
In 1824, a [[Prussia]]n army officer named [[Georg Heinrich Rudolf Johann von Reisswitz]] presented to the Prussian General Staff a highly realistic wargame that he and his father had developed over the years. Instead of a chess-like grid, this game was played on accurate paper maps of the kind the Prussian army used. This allowed the game to model terrain naturally and better simulate battles in real locations. The pieces could be moved across the map in a free-form manner, subject to terrain obstacles. The pieces, each of which represented some kind of army unit (an infantry battalion, a cavalry squadron, etc.), were little rectangular blocks made of lead. The pieces were painted either red or blue to indicate the faction it belonged to. The blue pieces were used to represent the Prussian army and red was used to represent some foreign enemy&mdash;since then it has been the convention in military wargaming to use blue to represent the faction to which the players actually belong to. The game used dice to add a degree of randomness to combat. The scale of the map was 1:8000 and the pieces were made to the same proportions as the units they represented, such that each piece occupied the same relative space on the map as the corresponding unit did on the battlefield.

The game modeled the capabilities of the units realistically using data gathered by the Prussian army during the [[Napoleonic Wars]]. Reisswitz's manual provided tables that listed how far each unit type could move in a round according to the terrain it was crossing and whether it was marching, running, galloping, etc.; and accordingly the umpire used a ruler to move the pieces across the map. The game used dice to determine combat results and inflicted casualties, and the casualties inflicted by firearms and artillery decreased over distance. Unlike chess pieces, units in Reisswitz's game could suffer partial losses before being defeated, which were tracked on a sheet of paper (recreational gamers might call this "[[hitpoint]] tracking"). The game also had some rules that modeled morale and exhaustion.

Reisswitz's game also used an umpire. The players did not directly control the pieces on the game map. Rather, they wrote orders for their virtual troops on pieces of paper, which they submitted to the umpire. The umpire then moved the pieces across the game map according to how he judged the virtual troops would interpret and carry out their orders.<ref>{{harvp|Peterson|2012}}:<br />"In addition to establishing the general idea and the composition of the opposing forces, the umpire serves as an intermediary for virtually all actions in the game: all movements, all communications and all attacks channel through the umpire, in writing. The players transmit written orders, authored to their units in the persona of a commander, and for the most part the umpire enjoys significant leeway in deciding how these orders will be interpreted."</ref> When the troops engaged the enemy on the map, the umpire rolled the dice, computed the effects, and removed defeated units from the map. The umpire also managed secret information so as to simulate the fog of war. The umpire placed pieces on the map only for those units which he judged both sides could see. He kept a mental track of where the hidden units were, and only placed their pieces on the map when he judged they came into view of the enemy.

Earlier wargames had fixed victory conditions, such as occupying the enemy's fortress. By contrast, Reisswitz's wargame was open-ended. The umpire decided what the victory conditions were, if there were to be any, and they typically resembled the goals an actual army in battle might aim for. The emphasis was on the experience of decision-making and strategic thinking, not on competition. As Reisswitz himself wrote: "The winning or losing, in the sense of a card or board game, does not come into it."<ref>{{harvp|Reisswitz|1824}}</ref>

In the English-speaking world, Reisswitz's wargame and its variants are called ''Kriegsspiel'', which is the German word for "wargame".

The Prussian king and the General Staff officially endorsed Reisswitz's wargame, and by the end of the decade every German regiment had bought materials for it.<ref>{{harvp|Vego|2012|p=110}}: "General Karl von Mueffling (1775–1851), chief of the general staff (1821–29) in Prussia, exclaimed, "It's not a game at all! It’s training for war. I shall recommend it enthusiastically to the whole army." He fulfilled that promise: a royal decree directed every regiment in the Prussian army to play the game regularly. By the end of the 1820s each Prussian regiment was purchasing with state funds materials for war gaming."</ref> This was thus the first wargame to be widely adopted by a military as a serious tool for training and research. Over the years, the Prussians developed new variations of Reisswitz's system to incorporate new technologies and doctrine.