The revolution flag of Egypt from 1919. It bears a crescent and cross to demonstrate that both Muslims and Christians supported the Egyptian nationalist movement against British occupation.
Self-drawn in Inkscape, based on the flag book: W. Smith, O. Neubecker: Die Zeichen der Menschen und Völker: Unsere Welt in Fahnen und Flaggen. Reich Verlag Luzern, 1975, ISBN 3-7243-0115-4
Kookaburra