The <a href="https://en.wikipedia.org/wiki/Alemanni" id="mwEQ" rel="mw:WikiLink" title="Alemanni">Alemanni</a> cross the <a href="https://en.wikipedia.org/wiki/Rhine" id="mwEg" rel="mw:WikiLink" title="Rhine">Rhine</a> and invade <a href="https://en.wikipedia.org/wiki/Gaul" id="mwEw" rel="mw:WikiLink" title="Gaul">Gaul</a>. Emperor <a href="https://en.wikipedia.org/wiki/Valentinian_I" id="mwFA" rel="mw:WikiLink" title="Valentinian I">Valentinian I</a> moves to <a href="https://en.wikipedia.org/wiki/Paris" id="mwFQ" rel="mw:WikiLink" title="Paris">Paris</a> to command the army and defend the Gallic cities.