 Most uncamouflaged training and transport aircraft retain the traditional red-white-blue roundel.The Latin motto of the RAF, "Per ardua ad astra", is usually translated as "Through Adversity to the Stars", but the RAF's official translation is "Through Struggle to the Stars".The choice of motto is attributed to a junior officer named J S Yule, in response to a request from a commander of the RFC, Colonel Sykes, for suggestions.