Tomoe Gozen
Woman warrior

Tomoe Gozen provides one of the few examples of a true woman warrior in early to early modern Japanese history. While countless other women were at times forced to take up arms (in defense of their castle, for example), Tomoe seems to have been a consumate warrior. She was married to Kiso (Minamoto) Yoshinaka (though the Heike Monogatari describes her as a female attendant), who rose against the Taira and in 1184 took Kyoto after winning the Battle of Kurikawa. With the Taira forced into the Western Provinces, Yoshinaka began insinuating that it was he should carry the mantle of leadership of the Minamoto - a suggestion that prompted an attack by Minamoto Yoritomo. Yoshinaka - and Tomoe - faced the Yoritomo's warriors at Awazu, a desperate fight in which Tomoe took a least one head.
The Heike Monogatari says this of Tomoe…

"…Tomoe was especially beautiful, with white skin, long hair, and charming features. She was also a remarkably strong archer, and as a swordswoman she was a warrior worth a thousand, ready to confront a demon or a god, mounted or on foot. She handled unbroken horses with superb skill; she rode unscathed down perilous descents. Whenever a battle was imminent, Yoshinaka sent her out as his first captain, equipped with strong armor, an oversized sword, and a might bow; and she preformed more deeds of valor than any of his other warriors."
(Tale of the Heike, McCullough, pg. 291)

The HM goes on to say that Tomoe was one of the last five of the Kiso standing at the tail end of the Battle of Awazu, and that Yoshinaka, knowing that death was near, urged her to flee. Though reluctant, she rushed a Minamoto warrior named Onda no Hachiro Moroshige, cut his head off, and then fled for the eastern provinces.
Some have written that Tomoe in fact died in battle with her husband, while others assert that she survived and became a nun.