<a href="https://en.wikipedia.org/wiki/Spanish_Civil_War" id="mw2w" rel="mw:WikiLink" title="Spanish Civil War">Spanish Civil War</a>: The German <a href="https://en.wikipedia.org/wiki/Condor_Legion" id="mw3A" rel="mw:WikiLink" title="Condor Legion">Condor Legion</a>, equipped with <a href="https://en.wikipedia.org/wiki/Heinkel_He_51" id="mw3Q" rel="mw:WikiLink" title="Heinkel He 51">Heinkel He 51</a> biplanes, arrives in Spain to assist <a href="https://en.wikipedia.org/wiki/Francisco_Franco" id="mw3g" rel="mw:WikiLink" title="Francisco Franco">Francisco Franco</a>'s forces.