Seven Weeks War 1866 (and the 3d Italian Risorgimento) is an independent Age of Valor (AOV) expansion chapter or mini-module for Age of Eagles II, also known as Napoleonic Fire & Fury. As such AOE II is needed to properly play this game. In most cases all rules changes have been imbedded in the Data Charts as well as the charts and tables on the Quick Reference Sheet. All players need to do is use these new specifications or DRMs with the original rules, then play as normal. Any changes unique to the Seven Weeks War and the 3rd Italian War of Independence, the subjects of this expansion set, are included for both the conflict overall, and the included battles of Trautenau, Problus, Kissingen and Custoza scenarios. The AOV product line is sold primarily via a digital PDF distribution format, though a hardcopy version is available from certain retailers. It is 36 pages long.