After that, Osman set about preparing for the next attack. He took advantage of the natural landscape and built a strong network of forts, trench lines, and redoubts that enabled him to fully use his superior armament (his troops had Krupp breech-loading artillery, long range Peabody-Martini rifles and Winchester repeaters, which severely outgunned and outranged the Russians). He also received 5,000 soldiers as reinforcements. On 30 July the Russians attacked again only to lose over 7,000 soldiers (almost a third of the attacking force). By now, with the Russian forces severely depleted and demoralized, Osman Pasha could have launched a counterattack that would have endangered the whole Russian army south of the Danube, but he chose to obey his orders and instead defended Plevna.