The Royal Air Force - A Tribute. 'Through Adversity to the Stars (Per ardua ad astra) | Education Video by World of Military
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<p>Per ardua ad astra is a Latin phrase meaning "through adversity to the stars" or "through struggle to the stars" that is the official motto of the Royal Air Force and other Commonwealth air forces such as the Royal Australian Air Force and Royal New Zealand Air Force, as well as the Royal Indian Air Force until 1947.</p>
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