Following his victory at Eckmühl on 22 April Napoleon summoned his first ever council of war, which decided to halt the army about 18 kilometers south of the city of Ratisbon (which the Austrians had captured two days earlier). That night, the main Austrian army (I–IV Korps and I Reserve Korps) began moving its heavy equipment over the city’s vital stone bridge over the Danube, while a pontoon bridge was thrown 2 kilometers downstream to the east for the troops. Five battalions from II Korps defended the city, while 6,000 cavalry and some infantry battalions held the hilly ground outside. Scene of the last engagement of the Bavaria phase of the campaign of 1809, the brief defense of the city and installation of a pontoon bridge to the east enabled the retreating Austrian army to escape into Bohemia.