July, 1902: A month after the first landing of the Martian invasion, the war enters into its second phase.
Of the survivors, a very small percentage are not changed in terms of appearance, but rather become something perhaps more than merely human. The reports that one hears is astounding, but there are enough of them from credible sources that they can not be dismissed out of hand: men (and women) who can fly, or display superhuman feats of strength, or create lightning from their bare hands, or read the thoughts of other humans, or any other number of remarkable and terrifying abilities. These 'titans' (as some have dubbed them) are not powerful enough to to change things individually, even given their unique talents, and many have died under the heat rays and the black smoke of the Martian tripods. However, there are reports of some of these titans banding together, each using their individual talents as part of a greater whole. Most notably, a group of a half-dozen of these titans managed to take down and destroy one of the alien tripods in these streets of London recently.
Of course, given human nature, not all of these titans are dedicated to fighting the alien invaders. Some are merely interested in their own survival and well-being, and avoid any contact with the Martians, using their abilities to lord over other humans for their relative comfort. Even worse are those titans who have sided with the Martians, along with the other human quislings* who have thrown in with the invaders in hopes of retaining or achieving some degree of power over their fellow human beings. Perhaps the worst of these quislings are the 'keepers', scientists who have thrown in with the Martians so as to learn more of the unearthly science of the aliens.
(Inspirations: War of the Worlds, Wild Cards, Planet of the Apes, Killraven)
*yes, I know 'quisling' isn't a term used in WOTW, and in fact would not become a word for traitor until WWII - I'm using it here anyways, so deal with it.