Claim: Hälsinge Air Force Wing, offically Hälsinge flygflottilj, was originally named Royal Hälsinge Air Force Wing and is part of the 500 year old Swedish Armed Forces.
Evidence: Royal Hälsinge Air Force Wing 1945-07-01 Hälsinge Air Force Wing (Swedish: Hälsinge flygflottilj), also F 15 Söderhamn, or simply F 15, is a former Swedish Air Force wing with the main base located near Söderhamn in northern Sweden. 1521; 499 years ago (1521)