//en.wikipedia.org/wiki/Flight_over_Vienna" title="Flight over Vienna">Flight over Vienna</a></li>
<li><a href="//en.wikipedia.org/wiki/Bloody_April" title="Bloody April">Bloody April</a></li>
<li><a href="//en.wikipedia.org/wiki/Category:Aerial_operations_and_battles_of_World_War_I" title="Category:Aerial operations and battles of World War I">Battles</a></li>
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