left rear and unfavorable reports from Archduke Louis. This crucial decision meant that the Austrian left wing would in the near future operate independently from Archduke Charles' main body. Hiller would only reunite with his army commander on 15 May north of Vienna. While Napoleon savaged his left wing, Archduke Charles remained amazingly inert. At 6:00 AM, the archduke was with Prince Rosenberg and at 7:30 AM he sent orders to Archduke Louis and then wrote a letter to Emperor Francis I of Austria. But from 11:00 AM until 6:30 PM, the Austrian generalissimo failed to issue any orders. He either became obsessed with capturing Regensburg or he had an epileptic seizure during which he is supposed to have locked himself in his quarters. The epileptic attack is probable, but there is a possibility it may be a cover story for Charles' failure to exercise command. What is known is that the Austrian III, IV, and I Reserve Armeekorps did not disturb Davout's remaining three divisions under Generals of Division Louis Friant, Saint-Hilaire, and Montbrun on 20 April. Despite being outnumbered, Napoleon's 113,000 troops split the 161,000 strung-out Austrians into two forces. Charles five corps, including 48,000 additional troops of the I and II Armeekorps north of Regensburg, lay to the north while Hiller's three corps fell back to Landshut. (Massena and Oudinot's 57,000 soldiers are not counted in Napoleon's total.) Both Austrian forces had to fight a second major battle each. Hiller fought the Battle of Landshut on 21 April, while Charles engaged in the Battle of Eckmühl on the 22nd. Order of battle The following is an abbreviated order of battle. Complete orders of battle are found in the Abensberg 1809 Order of Battle. Austrian forces Left Wing: Feldmarschall-Leutnant Johann von Hiller VI Armeekorps: Feldmarschall-Leutnant Johann von Hiller (35,639) Strength only. Order of battle. Reserve Artillery: Feldmarschall-Leutnant Karl von Rouvroy (24 guns) Division: Feldmarschall-Leutnant Friedrich Kottulinsky Brigade: General-Major Otto Hohenfeld (6 battalions, 8 guns) Brigade: General-Major Nikolaus Weissenwolf (6 battalions, 8 guns) Divisional Artillery: (6 guns) Division: Feldmarschall-Leutnant Franz Jellacic (Jellacic detached at Munich) Brigade: General-Major Konstantin Ettingshausen (6 battalions, 8 guns) (Detached at Munich) Brigade: General-Major Karl Dollmayer von Provenchères (5 battalions, 8 squadrons, 14 guns) (Detached at Munich) Hoffmeister's brigade belonged to Jellacic, but it was exchanged for Dollmayer von Provenchères' brigade of the Light Division at the beginning of the conflict. Divisional Artillery: (6 guns)