Definitions for "man-at-arms"
A heavily armed and sometimes mounted soldier in medieval times.
A soldier holding his land, generally 60-120 acres, specifically in exchange for military service. Sometimes called a Yeoman. (MEDIEV-L. Medieval Terms) Any mounted fighting man who wore armour. (Wise, Terence. Medieval Warfare, 250)
miles A soldier holding his land specifically in return for military service.
a cavalry man supplied with heavy arms
Man-At-Arms is the alias of Duncan, a supporting character from the 1983-1985 cartoon-series He-Man and the Masters of the Universe by Filmation and also a featured character of the Masters of the Universe (MOTU) toy-line by Mattel.