The mighty Claudius

[Atilius]

In 43 Claudius led 50,000 troops in an invasion of Britain. He found allies, the legions performed admirably, and the conquest proceeded apace. Claudius, gimpy-legged, ill-coordinated, and not young, arranged somehow to kill the British chieftain in single combat and thus became one of the few Romans ever to win the spoila opima (awarded to a Roman commander who kills the enemy commander in single combat).

I wonder if the author is mistaking the emperor Claudius with the consul Marcus Claudius Marcellus, who was the last man to win the spolia opima. He slew the Gallic chieftain Vertomarus at the battle of Clastidium in 222 BC. That's sort of a big mistake though.