Despite Germany proving victorious on the eastern front following the Russian Revolution, the military high command had failed to prevent the continuing erosion of morale, both domestically and in the army. Despite transferring veteran troops from the eastern front to fight on the western front, the Spring Offensive was a failure and following the outbreak of the German Revolution the Germany's provisional government was obliged to agree to the terms of the 1918 armistice. This included accepting that the troops of the victorious powers occupied the left bank of the Rhine and four right bank "bridgeheads" with a 30 kilometres (19 mi) radius around Cologne, Koblenz, Mainz and a 10 kilometres (6 mi) radius around Kehl.