COMMISSIONED OFFICER. Commissioned Officers are the managers, problem solvers, key influencers and planners who lead Enlisted Soldiers in all situations. Enlisted Soldiers perform specific job functions and have the knowledge that ensures the success of their unit's current mission within the Army.
The primary difference between chin-ups and pull-ups is that chin-ups are done with a supinated grip, palms facing in toward the exerciser. This sets up the mechanics so that chin-ups, while still primarily a back exercise, also provide a good arm workout, particularly for the biceps.
1 The pull-up or chin-up is primarily an exercise for your back muscles. 2  Those are the lats â the muscles of your armpits. 3  You will fail to get good if you canât feel and use your lats. 4  Itâs just that the biceps is too small and too week, no matter how well developed, to allow you chin-up mastery.