Grenland is a Nation in the Airship Assault Universe if you don't know what Airship Assault is, it's a Game on Roblox.
It's a Nation where it's suppose to be Depicted as the Opposer of it's Enemy Vauhgray, Allied with Redamura and it's also a Monarchist.

It is suppose to be like Great Britain during the Great War Hence this s why most of their Bi-Planes had a Similar one to the French Cockade Symbol, except it's has Green, White and Red though the Red is Unknown since there's no Red in the Flag