Final answer:
The proper placement of the US insignia on the service coat depends on the branch of the military and specific regulations. Generally, it is worn centered horizontally on the left lapel, 5/8 inch above the notch. Consult the specific branch's regulations for exact placement.
Step-by-step explanation:
The proper placement of the US insignia on the service coat depends on the branch of the military and the specific regulations. However, in general, the US insignia is worn centered horizontally on the left lapel of the service coat, approximately 5/8 inch above the notch of the lapel. It should be positioned so that the middle of the insignia is aligned with the middle of the button of the coat.
For example, in the US Army, the branch insignia is worn above and parallel to the US insignia, centered vertically between the top shoulder seam and the top button of the coat. On the other hand, in the US Air Force, the rank insignia is worn centered horizontally, with the bottom edge located 5/8 inch above the notch of the lapel.
It is important to consult the specific regulations of the branch of the military in question to determine the exact placement of the US insignia on the service coat.