Historical accounts concerning Japanese martial traditions often describe various forms of duels and other ‘oppositional matches.’ The further one goes back in history, the more remarkable these duels sound, but one must look at them with some degree of skepticism, the same way we should regarding stories of the American frontier where one or another hero ‘wrassled’ a grizzly bear or an alligator. For example, Araki Mataemon, a legendary master of Shinkage-ryū allegedly had a duel against thirty-six opponents—at least, that was the story in a Kabuki drama of the period. However, I recall a news article in Japan in the 1970’s, where an old document was found in a family’s storehouse (these kura, sometimes sealed up for centuries, have remarkable historical records and artifacts) that purported to be an eye-witness account of the duel. As best as I recall, Araki faced two enemies. The three of them faced off, swords clenched, trembling, unmoving for a L-O-N-G time. Eventually, one man’s nerve broke, and as he turned to run away, Araki cut him down. The other man ineptly attacked and Araki killed him too.
It is at this point that some definitions are in order, because there were a number of force-on-force encounters that individuals could engage, short of warfare or duels. In fact, most adversarial encounters with weaponry in the Edo period did not result in death, though it was always a possibility.