VAUBAN is a siege warfare supplement for use with Ultima Ratio Regum rules. This supplement covers: fortress design, duties rosters, bombardment, storming a position, mining and counter-mining, general army morale, representing defences, design notes, as well as new units (specifically mortars, pierrier mortars, engineers, pontooneers, work parties, and spies - and for the Ottoman Turks a cannon foundry!). —description from the publisher