World War II: The Soviet <a href="https://en.wikipedia.org/wiki/Red_Army" id="mwYw" rel="mw:WikiLink" title="Red Army">Red Army</a> and <a href="https://en.wikipedia.org/wiki/Yugoslav_Partisans" id="mwZA" rel="mw:WikiLink" title="Yugoslav Partisans">Yugoslav Partisans</a> <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Belgrade_Offensive" id="mwZQ" rel="mw:WikiLink" title="Belgrade Offensive">liberate Belgrade</a>.