Obsolete badges of the United States military
Obsolete badges of the United States military are a number of U.S. military insignia which were issued in the 20th and 21st centuries that are no longer used today. After World War II, many badges were phased out of the United States Armed Forces in favor of more modern military badges used today.
Source: Wikipedia — Obsolete badges of the United States military (CC BY-SA 4.0)