 Welcome to All Hands Update. I'm Petty Officer Ian Cotter. The Medical Service Corps celebrates its 67th anniversary this year. These medical professionals support warfighters, their families, and veterans. MSC officers serve in more than 250 naval and medical commands throughout the world. MSC was originally called the Navy Hospital Corps during World War I. Today, the MSC supports a diverse field of medical professionals and is made up of 31 subspecialties. They are organized under three major categories, healthcare administrators, clinicians, and scientists. These officers serve in fields like optometry, healthcare administration, physical therapy, social work, and entomology. There are more than 2,500 active-duty Medical Service Corps officers and more than 300 in naval reserves.