During the start of the Swedish invasion of Russia, Charles XII of Sweden was informed of Peter I's presence at the town of Grodno and immediately marched there with his vanguard of approx 800 men. While awaiting the rest of his army, Peter had 9,000 men for use in Grodno. 2,000 of these had been stationed near the bridge leading to the town. On his arrival, the Swedish king charged with his cavalry in a surprise to drive the Russians away.