Worshipper – “Ship” [Campaign 2, Mission 4]

and in the Sylvan faction, recruit creatures

If they are available there, then of course, it would be especially good to replenish the ranks of archers. :) If they are not, it is better not to linger. And if your troops are no longer sufficient for further advancement, then, I think, it makes sense to fortify your position until reinforcements arrive in the city, build the necessary dwellings for creatures there, and have Agrael explore some mines and other useful buildings by the end of the week so that he doesn't just sit around. :)