Scarcely six weeks had elapsed since their formation, when the Zouaves took the field under Marshal Clausel, marching against Medeah, an important station in the heart of Western Algeria. On the hill of Mouzaïa they fought their first battle, in which they were completely successful. They remained two months as a garrison in Medeah. Here they showed proofs of a valor and patience most extraordinary. Left alone in a frontier post, constantly in the vicinity of a savage foe, watching and fighting night and day, leaving the gun only to take up the spade, compelled to create everything they needed, reduced to the last extremities for food, cut off from all communications,--it was a rough trial for this little handful of new soldiers. The place was often attacked; they were always at their posts; till in the last days of April they were recalled, and the fortress yielded up to the feeble Bey whom the French had decided to establish there. In June, troubles having again arisen, General Berthezène conducted some troops of the regular army to Medeah, to which was added the second battalion of Zouaves, under its gallant captain, Duvivier. On his return, the troops were attacked with fury on the hill of Mouzaïa, the spot where the Zouaves had in February of the same year received their baptism of fire. Wearied with the long night-march, borne down by insupportable heat, stretched in a long straggling line through mountain-passes, the commander of the van severely wounded at the first discharge, they themselves separated, without chiefs, and surrounded by enemies, the French troops recoiled; when Duvivier, seeing the peril that menaced the army, advanced with his battalion. Shouting their war-cry, they rushed on the Kabyles, supported by the Volunteers of the Chart, or French Zouaves, thundering forth the Marseillaise; turning the pursuers into pursued, they covered the retreat of their associates to the farm of Mouzaïa, where the army rallied and proceeded without further loss to Algiers. This retreat, and its attendant circumstances, made the Zouaves, before regarded, if not with contempt, at least with dislike, _free of the camp_.