Air ensigns With the creation of independent air forces and the growth in civil aviation in the first half of the 20th century, a range of distinguishing flags and ensigns were adopted. These may be divided into air force ensigns (often light blue in color, such as the Royal Air Force Ensign) and civil air ensigns.
Air ensigns Wi,th the creation of independent air forces and the growth in civil aviation in the first half of the 20th century a range of distinguishing flags and ensigns were adopted. These may be divided into air force ensigns (often light blue in color, such as the Royal Air Force Ensign) and civil air ensigns.