Naval Air Station Willow Grove

Naval Air Station Willow Grove, located in Horsham Township, Pennsylvania, was established in 1926 as a private airfield before being acquired by the U.S. Navy in 1942 during World War II. The base served as a key training and operational site for naval aviation units, including anti-submarine warfare and reserve squadrons. Over the decades, Willow Grove became a joint reserve base, hosting Navy, Marine Corps, Air Force, Army, and Pennsylvania Air National Guard units. The installation was closed in 2011 as part of the Base Realignment and Closure (BRAC) process, with its mission and assets transferred to nearby facilities.