John fought Eugène in a tough rearguard action at the Battle of Piave River on 8 May. Up to this moment, John and his soldiers had fought well. Now, John probably committed a serious blunder by splitting up his command. With the main army he fell back to the northeast. By the second week of May, John and Feldmarschallleutnant Albert Gyulai stood at Tarvisio with 8,340 troops. Feldmarschallleutnant Johann Maria Philipp Frimont's 13,060-man Mobile Force lay at nearby Villach. Feldmarschallleutnant Ignaz Gyulai with 14,880 men of the IX Armeekorps defended the Ljubljana (Laibach) area to the southeast of Villach. Far to the west-northwest, Feldmarschallleutnant Johann Gabriel Chasteler de Courcelles and 17,460 soldiers of the VIII Armeekorps held the region around Innsbruck. Feldmarschallleutnant Franjo Jelačić and the 10,200-strong Northern Division was stationed at Salzburg to the northwest. Finally, General-major Andreas von Stoichewich's 8,100 men continued to pin Marmont in Dalmatia to the south of Ljubljana. By this time a large proportion of John's forces was made up of hastily raised landwehr infantry.