World War I-era US Army 5th Anti-Aircraft Artillery patch, specifically from the American Expeditionary Forces (AEF). This collectible patch represents a piece of military history from the United States during the early 20th century and is a unique and valuable item for collectors interested in militaria. Made in the United States, this patch showcases the country's involvement in the war and is a tangible symbol of the sacrifices made by soldiers during this time.