It looks like it takes eight elements to block river crossing.
Your harbor battleships can be used for this purpose.
Cardinal Ape wrote:I'm not sure of the mechanics off-hand. The only time I've ever really used it is when I thought someone was going to assault a small garrison for the purpose of milking promotions for their commanders.
Nikel wrote:I have learnt a lot of military history and geography playing wargames, specially Ageod's!