The phrase "was the saddle" can be synonymous with terms such as "rode the horse," "mounted the mare," or "took the reins." These expressions all convey the action of taking control of a horse for a ride. Other synonyms could include "straddled the pony," "hopped on the steed," or "saddled up." Additionally, "was in the saddle" could be replaced with "was riding" or "was on horseback." Regardless of the phrasing used, these synonyms all indicate the same action and allow for variation in language and writing style.