World War II: <a href="https://en.wikipedia.org/wiki/Nazi_Germany" id="mwzA" rel="mw:WikiLink" title="Nazi Germany">Nazi Germany</a> invades the <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwzQ" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> in <a href="https://en.wikipedia.org/wiki/Operation_Barbarossa" id="mwzg" rel="mw:WikiLink" title="Operation Barbarossa">Operation Barbarossa</a>.