Air Force badge Carol II. Romania 4,8 x 3,6 cm The badge for air observers, model King Carol II is a Romanian military badge from the interwar period (1930-1940), which was worn by air force officers who served as observers. The badge is made of metal (often bronze or silver) and shows outstretched wings surrounding the royal monogram of King Carol II under the royal crown, symbolising service in the Romanian Royal Air Forces.