In what context are they using the word ‘deadliest’?
They (Time) dropped it frequently, down to their various qualifications for the three. Montgomery planned and commanded the biggest amphibious and air-borne attacks in history (deadly to whom?) Le May razed a good part of Tokyo, several German cities, and threatened to bomb North Vietnam back to the stone age. Giap’s victories appeared deadly only because it involved westerners on the losing side. That last one’s my HO.
The French had guillotined his sister for delivering subversive newspapers. Pissed him off.