Man at arms
Term used in the middle ages to describe mounted soldiers (latin homines ad arma), sometimes including all such troops, but more often to define a catagory of mounted soldier one step below the Knight, the group of men sometimes know as esquires.
How to cite this article: Rickard, J. (11 February 2001), Man at arms, http://www.historyofwar.org/articles/weapons_manatarms.html