A series of reforms to the Russian army had begun in 1802, creating regiments of three battalions, each battalion having four companies. The defeats of Austerlitz, Eylau, and Friedland led to important additional reforms, though continuous fighting in the course of three wars with France, two with Sweden, and two with the Ottoman Empire had not allowed time for these to be fully implemented and absorbed. A divisional system was introduced in 1806, and corps were established in 1812. Prussian influence may be seen in the organizational setup. By the time of Borodino the Russian army had changed greatly from the force which met the French in 1805–07.