The Logistics set adds factories and other logistical issues to Victory.Land, sea and air units each have their own factories, replacing the generic city production points of the standard game. Airfields can now be built, allowing air units to land even without a city or town. Mulberries are temporary ports that can be built by Marines. A storm affects a cluster of seven hexes and moves randomly each turn, preventing unit movement. All the logistics installations can be attacked and damaged or even destroyed, as can now bridges and canals, and appropriate markers are provided.Expands: Victory: The Blocks of War - BoardGameGeek