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.
Pull-ups are helpful to build arm and back strength. Normal push-ups are great for chest strength. Close-grip push-ups help with arm strength as well. Done correctly, both also have secondary beneficial effects on basic core strength. Top net it out, adding push-ups and pull-ups to your workouts will help build upper-body strength, size and definition.