Lower force densities on the Eastern Front meant that the fighting was more mobile than it was on the West after 1914, but both fronts were quite active right up until the end of the war. The French and British launched a series of Offensives in the West in 1915, while the Carpathian battles and the German Offensives in Lithuania and Poland took place in the east, and 1916 saw fighting at Verdun and the Somme concurrent with Russian Offensives at Lake Naroch, in Galicia and at Kovel, and then the Romanian campaign. In fact, in 1917 and 1918 the Western Front was probably more active than the east, due to the disruptions of the Russian Revolutions.