A bridgehead was established and reached 15 kilometers east of the Dnieper, which was as far as the Polish 3rd Army advanced. About 20,000 Red Army troops had been taken prisoner by 2 May. Only 150 Polish soldiers died during the entire operation. On 9 May, the Polish and Ukrainian troops celebrated the capture of Kiev with the victory parade on Khreshchatyk, the city's main street. Control over Kiev was given to the Ukrainian People's Republic and the Ukrainian 6th Division was garrisoned there. However, the military achievement turned out to be incomplete, as the Bolshevik armies, contrary to Polish objectives, avoided decisive confrontations and had not been destroyed. While the Polish forces had been drawn deeply into the Ukrainian territory, the Soviets could not be made to participate in forced negotiations, as the Polish side had hoped. The Polish command soon felt compelled to transfer some of its units to the northern Belarusian front. On 1 May, in a letter to his wife, Piłsudski declared a victory: "With the first stage completed, you must now be very surprised and a little scared by these great successes. In the meantime, I prepare for the second phase and arrange the forces and materials so it can be as effective as the first one. So far, I had completely destroyed the entire Bolshevik 12th Army, of which nothing at all had been left ... one feels dizzy thinking of the amount of war materials captured ... I had won this great battle by a daring plan and extraordinary energy put into its execution." The triumphant tone turned out to be premature. The 12th Army, in particular, had been battered but not destroyed, as the marshal was soon to find out. The military and political developments elicited a sharp response in Russia, where Vladimir Lenin and Leon Trotsky appealed to national sentiments and called for total war with expansionist Poland. General Aleksei Brusilov, former chief commander of the Russian Empire's tsarist army and from 2 May chairman of the new Council of Military Experts, appealed to his former officers to re-enlist with the Bolshevik forces and 40,000 of them complied. A large army of volunteers had also been raised and sent to the Western Front; the first units departed Moscow on 6 May. The Soviet leaders considered the Polish attack in Ukraine a stroke of good fortune. They saw Poland as falling into