The Swiss Bar military press is a great exercise to improve the strength of your shoulders and triceps. Using the Swiss Bar will take a lot of the stress off of your rotator cuff due to the shorter range of motion the bar calls for. This is also a great way to build tricep strength to lock out big benches.
To perform the lift, place the swiss bar in the rack slightly above shoulder level. If you want to stay true to military press traditions, make sure your heels are together for the movement. Use whatever sets of grips you'd like, but keep in mind that the closer your grip is, the more stress you'll place on the triceps. Then just press the bar overhead and lock it out hard at the top without snapping your elbows. Locking it out without snapping your elbows helps prevent stressing the elbow joint.