Also known as Aikijujutsu, Daito-Ryu Aikijutsu was originally developed during feudal times by the Takeda clan, in support of the Emperor.  In modern times, the term refers to the style of Daito-Ryu Aikijujutsu developed by 
Takeda Sokaku[?].  This style was taught primarily to police officers and the military, and was a central influence in 
Ueshiba Sensei's development of 
Aikido.
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