When the Poles launched their Kiev Offensive, the Russian Southwestern Front had about 83,000 Soviet soldiers, including 29,000 front-line troops. The Poles had some numerical superiority, which was estimated from 12,000 to 52,000 personnel. During the Soviet counter-offensive in mid-1920, on all fronts, the Soviets numbered about 790,000, at least 50,000 more than the Poles. Mikhail Tukhachevsky estimated that he had 160,000 combat ready soldiers, while Piłsudski estimated Tukhachevsky's forces at 200,000–220,000.
