Military org. with the motto Per ardua ad astra
Else clues• Battle of Britain grp.
• Can. air group
• Can. fliers
• Canadian military grp.
• Maple leaf flyers
• Military force until 1968, briefly
• Military org. formed in Ontario in 1925
• North Amer. WWII fliers
• North-of-the-border fliers: Abbr.
• Northern fliers
• Northern fliers: Abbr.
• Ontario military initials
• Org. involved in NORAD
• Our neighbor's mil. fliers