ABSTRACT
IN the last chapter we saw how huge beams, planted in the waters for the defence of castles and cities, are broken through by boats. Now I shall describe another manoeuvre of northern soldiers: how very large, thick iron chains,1 fastened to the shores and harbours for the defence of strong holds or towns, like the beams I mentioned, are shattered, so that men may come to the aid of their friends shut in by a siege more conveniently and forcefully, even in the face of the blockading enemy.
