A watan Agusta 1792, wata babbar rundunar Austro-Prussian karkashin jagorancin Duke na Brunswick ta tsallaka kan iyaka kuma ta fara tafiya zuwa Paris tare da niyyar mayar da cikakken iko ga Louis XVI. Sojojin juyin juya hali da yawa sun sha wahala da sauƙin nasara ta hanyar ƙwararrun sojojin Austrian, Hessian, Brunswick da Prussian. Sakamakon nan da nan na wannan shi ne mamayewar Fadar Tuileries ta hanyar 'yan bindigar Paris da ke dauke da makamai da kuma kawar da sarki. Sojojin juyin juya halin da suka biyo baya sun kasa dakatar da ci gaban Brunswick, kuma a tsakiyar watan Satumba ya bayyana cewa Paris za ta fada ga masu mulkin mallaka. Majalisar ta ba da umarnin sauran sojojin da za a hade a karkashin umurnin Dumouriez da François Christophe Kellermann. A cikin
Yaƙin Valmy a ranar 20 ga Satumba, 1792, sojojin juyin juya hali sun ci gaba da tsaron Brunswick, wanda ya sa sojojin mamaye suka fara komawa kan iyaka. Yawancin yabo ga nasarar an bashi ga sojojin Faransa, wanda aka fi sani da mafi kyau a Turai godiya ga ingantaccen fasaha na Jean Baptiste Vaquette de Gribeauval.