The U.S. military is divided into six branches: the Army, Navy, Air Force, Marine Corps, Coast Guard, and Space Force. Each has its own individual hierarchy, featuring the most accomplished and decorated officers at the very top and recent enlistees at the bottom. Along this chain of command you’ll find ranks such as captains, colonels, and sergeants, all of which are familiar terms. But unless you’ve served in the military, you may be wondering how those ranks stack up, and who answers to...