The Geneva Arbitration of 1872 was convened to settle various differences between the United States and Great Britain and, in particular, American allegations of British collusion with regard to shipbuilding for the Southern Confederacy during the American Civil War. The Arbitrators ultimately found Britain liable, and awarded $15,500,000 to the United States. This decision remains controversial to the extent that it rested on rules which were not yet accepted as principles of general international law, and which clearly favoured the case of the United States from the outset. It is thus the purpose of this article to explore the facts behind the Geneva Arbitration, and to argue that the finding of British liability in Geneva marked the beginning decline of the laws of neutrality. Neutral Countries […] may be exploited by the Great Powers both strategically and as a source of additional armies and fleets. Of central importance to the game are those Neutral Countries and provinces which are designated as “Supply Centres.” […] A player's fighting strength is directly related to the number of Supply Centres he or she controls, whilst the game is won when one player controls at least 18 Supply Centres.