"The Defiant Agents" by Andre Norton is a science fiction novel published in 1962. Apache operatives crash-land on planet Topaz after a mind-altering machine activates their ancestral memories, leaving them confused about their mission. They encounter Russians similarly transformed into Mongolian warriors under mind-control. Travis Fox discovers he can communicate with coyotes as memories slowly return. Together, Apache and Mongols must overcome their controllers and protect dangerous alien technology from falling into the wrong hands in this Cold War-era adventure. (This is an automatically generated summary.)