Flying Tankers are a Tankathlon group from the spin-off manga Girls Und Panzer: Ribbon Warrior.
The Flying Tankers are a Tankathlon volunteer group formed and led by Alisa following the challenge launched by Shizuka Tsuruki. They're not officialy affiliated to Saunders due to the non-official status of Tankathlon matches.
As far from it they're known for riding paradrops tanks M22 Locusts that they borrowed to BC Freedom High School.
The name and nature of the "Flying Tankers" is likely a reference to the American Volunteer Group, or "Flying Tigers."