In 1792–1794, the guillotine awaited military commanders who either failed, belonged to the nobility, or displayed insufficient revolutionary zeal.
Under Charles François Dumouriez, the Army of the North helped blunt the Prussian invasion at the Battle of Valmy on 20 September 1792.
It also made up a large part of Dumouriez's expedition into the Austrian Netherlands which resulted in victory at the Battle of Jemappes on 6 November 1792.
[2] Charles Edward Jennings de Kilmaine skirmished with the Coalition army at Caesar's Camp near Cambrai on 7 August.
Soon after this, the Allied position in Flanders collapsed, leading to Austria's loss of Belgium and the extinction of the Dutch Republic in the winter of 1794-1795.
Its duties included holding cities and fortresses in northern Spain, fighting guerillas, and keeping the roads to France clear.
Despite access to the armaments factories of Lille, the Army of the North suffered from severe supply difficulties, which depressed morale.
In January 1871, Léon Gambetta forced Faidherbe to march his army beyond the fortresses and engage the Prussians in open battle.
At the Battle of St. Quentin, the Army of the North suffered a crushing defeat and was scattered, releasing thousands of Prussian soldiers to be relocated to the East.