U.S. Army Physician Assistants serve as versatile medical specialists across the full spectrum of Army medicine If you are a professional in the physician assistant field and want to combine your passions with a desire to serve the U.S. Army, a career as an Army Physician Assistant might be the one for you. Outstanding Opportunities As a Physician Assistant for the U.S. Army, you will provide a broad range of diagnostic and therapeutic services for Soldiers and their families.