Killed by bacteria

I scrambled up to the crest of Primrose Hill, and the Martians camp was below me. A mighty space it was, and scattered about it, in their overturned machines, were the Martians - dead... slain, after all man's devices had failed, by the humblest things upon the Earth: bacteria. Minute, invisible bacteria!

Directly the invaders arrived and drank and fed, our microscopic allies attacked them. From that moment they were doomed!

Dead London