The sword draw is a very versatile exercise. Is can be used for rehab, strength, ROM and posture.
Primary- deltoids (medial and lateral), infraspinatus, supraspinatus
Secondary- trapezius, rhomboids
Start- you can use a band, dumbbell or no weight for this movement. Stand with your knees slightly bent and the abdominals braced. The arm will start across your body next to the opposite hip.
Movement- while keeping the elbow locked, pull the arm up and across the body. Make sure to rotate the arm in the direction you are lifting so that your thumb is pointing behind you when you reach the top of the movement.