Fightworthy

[…] being informed that Knut is still in England, but preparing for war, he sends home the less fightworthy part of his host [...]

However, the Americans were not portrayed as fightworthy.

He was worthy—fightworthy, trick-worthy, magic-worthy. All he had to do now was jump.

"[…] I'm normally more fightworthy than this, but he took me by surprise and had me sprawled before I knew what hit me."