The "We Believe in Ghosts"-Series is indeed an amazing and fascinating idea. Although it is hard to fill all gaps, an impressive number of patches already summed up in my collection.
Belgian Air Force
Royal Danish Air Force
French Air Force
French Navy
German Air Force
NATO
Royal Netherlands Military
Royal Norwegian Military
Polish Air Force
Romanian Air Force
Royal Air Force
Spanish Air Force
US Air Force
US Marine Corps
US Navy
