The fort-keeper

You hold your post without making noise. Instead of stepping up front, you do the set tasks, all of them. How many supplies are left, when the watch changes — it's all exact in your head, so the group comes to lean on you without noticing.

The strength is managing the present coldly and steadily. No flashy heroics, but you keep what must be kept and push the plan through without wavering. This diligence holds up the floor of the long war.

The weakness is the unexpected. Unbeatable on a board that runs to plan, you seize up when a fork demands an improvised turn. Leave room to accept one variable outside the rules and this fort gets far sturdier.