noun
: the duty or related group of duties that a soldier by training, skill, and experience is best qualified to perform and that is a basis for the classification, assignment, and advancement of enlisted personnel — abbr. MOS
noun
: the duty or related group of duties that a soldier by training, skill, and experience is best qualified to perform and that is a basis for the classification, assignment, and advancement of enlisted personnel — abbr. MOS
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012