Quotation from: The Gods of Mars

Written by: Edgar Rice Burroughs

Both men and women were armed with long-swords and daggers, but no
firearms were in evidence, else it had been short shrift for the
gruesome plant men of Barsoom.

Presently the leader of the plant men charged the little party, and
his method of attack was as remarkable as it was effective, and by
its very strangeness was the more potent, since in the science of
the green warriors there was no defence for this singular manner
of attack, the like of which it soon was evident to me they were as
unfamiliar with as they were with the monstrosities which confronted
them.