devoted to the constitutional monarchy and aimed to uphold the constitution, but the Emperor was dissatisfied with his work. On 29 August, with the assent of parliament, Batthyány and Ferenc Deák went to the Emperor to ask him to order the Serbs to capitulate and to stop Jelačić, who was planning to attack Hungary. At the same time, Batthyány made Jelačić the offer that Croatia - as part of the lands of the Hungarian Crown -, could separate from it peacefully. Batthyány's efforts were unsuccessful: even though the Emperor formally relieved Jelačić of his duties, in practice Jelačić and his army invaded Hungary on 11 September 1848. So Batthyány and his government resigned, except for Kossuth, Szemere, and Mészáros. Later, at the request of Archduke Stephen, Palatine of Hungary, Batthyány became Prime Minister again. On 13 September Batthyány announced a rebellion and requested that the Palatine lead it. However the Palatine, under orders from the Emperor, resigned his position and left Hungary. The Emperor did not recognise the new government on 25 September. He also invalidated Batthyány's leadership and nominated Count Franz Philipp von Lamberg as the leader of the Hungarian army. But Lamberg was assassinated by the rebels in Pest on 28 September. Meanwhile, Batthyány travelled to Vienna again to seek a compromise with the Emperor. Batthyány was successful in his hurried efforts to organize the Hungarian Revolutionary Army: the new army defeated the Croatians on 29 September at the Battle of Pákozd. Batthyány realised that he could not compromise with the Emperor, so on 2 October he resigned again and nominated Miklós Vay as his successor. At the same time, Batthyány resigned his seat in parliament. Resignation As an ordinary soldier, Batthyány joined József Vidos' army, and fought against general Kuzman Todorović, but on 11 October 1848 he fell off his horse and broke his arm. After Batthyány recovered he was again elected as a politician. Batthyány didn't want the Parliament to move to Debrecen. Because of his proposal the Parliament sent a delegation (including Batthyány himself) to General Alfred I, Prince of Windisch-Grätz to meet with him as the Parliament wanted to know Windisch-Grätz's purpose. But the general didn't want to meet with Batthyány, only with the other members of the delegation. On 8 January 1849 Batthyány went back to Pest, where he was captured at the Károly Palace and imprisoned in the Budai barracks. When the