This special edition of the Takemusu Aikido technical series presents an historical overview of the Founder's aikido techniques from the time of the mid-1930s through the Iwama period following World War II. It is based on technical material contained in the manual entitled Budo published in 1938 by Morihei Ueshiba supplemented by detailed commentary by Morihiro Saito Shihan. The technical material in this volume includes preparatory exercises, basic techniques, knife (tantodori), and sword-taking techniques (tachidori), sword vs. sword forms (ken tai ken), mock-bayonet (juken) techniques, and finishing exercises (shumatsu dosa).