The War to End All Wars 3rd Ed.
Complete Game Rules
Naval Invasions
A naval invasion occurs whenever land units move from a transport into an enemy owned territory. Trenches may not be placed along the boundary of a territory and a sea zone. However, the natural defenses of a coastline will apply penalties of their own to the invading force. Tanks may not participate in naval invasions at all. Infantry are -3 and artillery are -4 to their attack value. Aircraft receive no penalties if they enter into the territory via the sea borne coastal route. If the aircraft enter into the sea zone by way of an adjoining territory, then they will be subject to the penalties of any trenches they cross. Beach landing forces can NOT retreat from a naval invasion.
In addition to applying penalties to the invaders, every nation has a coastal defense force. These are small coastal guard units stationed to help repel invading forces. Each and every naval invasion will face a 1 defense factor coastal defense unit in addition to any other defending units in that territory. The coastal defense unit will always be the first unit lost by the defending force. This coastal defense unit is NOT present for attacks which are made solely by land, even if it is a coastal territory being attacked.
