 This invasion force consisted of 5,500 infantry and 500 cavalry, assisted by 1,000 Zaporozhian Cossacks of the Danubian Sich; Hilmi Ibrahim Pasha also sailed to the region with some 40 Ottoman river vessels.During their subsequent invasion of Putna County, Berkofcali reportedly isolated some other remnants of Vladimirescu's army.On May 14–15, the Ottomans held Copăceni and Cățelu, in sight of Bucharest.