World War II: <a href="https://en.wikipedia.org/wiki/Adolf_Hitler" id="mw3w" rel="mw:WikiLink" title="Adolf Hitler">Adolf Hitler</a> signs the order to develop the <a href="https://en.wikipedia.org/wiki/V-2_rocket" id="mw4A" rel="mw:WikiLink" title="V-2 rocket">V-2 rocket</a> as a weapon.