If the odds are 5-1 or less, the player declaring the overrun loses 1 division and then players proceed to resolve a regular battle. During the Build Phase, count the number of provinces between the home country and the army building. The regular cost would be 20 Gold. Count provinces of Spain, Portugal, Russia, Africa and the Ottoman Empire as two provinces. Naval units may only be built in the player's home country and only in the fall.
Agents enter the game according to the rules for new Leaders.
To enter an Agent into Play, the Player expends six Gold during his Land Phase and places him on the map. Russian Agents cost 10 Gold to enter. Once placed on the map, Agents have 5 Action Points to expend each Land Phase. To do this he rolls one d10 and checks the result. Infiltration requires no Action Points beyond the normal cost of movement.