From the article:
At age 16 he began what is almost certainly the most remarkable military career in the history of the world, a career which lasted 58 years (Mormon 2:16). What qualities did he possess that caused his people to appoint him to the position of commander in chief at age 16?(Yeah, sure...people appointed him to be a "commander-in-chief" at age 16...might make for a good Hollywood fantasy pix...based upon a Book of Mormon fantasy novel)