" Ranks of men on foot, men with shields, men with weapons, a shield wall that was meant to awe us, and it did.
A shield wall is a terrible thing. It is a wall of wood, iron, and steel with one purpose alone, to kill.
And this shield wall was massive, a wall of painted round shields stretching wide across the ridge’s flat top, and above it were the banners of the jarls, chieftains, and kings who had come to kill us. "

― Bernard Cornwell , Warriors of the Storm (The Saxon Stories, #9)