Guys, I think I found the perfect motto for Avalon Squadron:
[i]Ritterlich im Kriege, wachsam für den Frieden[/i]
(Chivalrous in War, Vigilant for Peace)
While its origins are in the Afrika Korps of the Second World War, I feel that it goes perfectly with Avalon being a King Arthur reference and knights playing a big role in Arthurian legends. Give it some thought, yeah?