Years later his equestrian expertise would lead to his first film assignments .
Born in 1946 in Buckinghamshire , England , Armstrong - at the age of 14 , quit school to pursue a career as a jockey .
Years later Armstrong 's equestrian expertise would lead to his first film assignments .
Born in 1946 in Buckinghamshire , England , Armstrong - at the age of 14 , quit school to pursue a career as a jockey .