And yet, you read the Shakespeare - the heavy stuff - and you come here to Westminster Abbey and you see the king lying on his tomb, and the sword he used in the battle, and you totally lose sight of the fact that, as a young man of 28 - well, Henry may have been a dab hand with the magic words, but he would have been nowhere in that battle if it hadn't been for the one thing he had and his French enemy didn't. 