Austrian court. They had no children. Military service In April 1800, Louis Antoine took command of a regiment of cavalry in the Bavarian army and took part in the battle of Hohenlinden against the French, showing some ability. In early 1801, Tsar Paul made peace with Bonaparte, and the French court in exile fled to Warsaw, then controlled by Prussia. For the next ten years, Louis-Antoine accompanied and advised his uncle, Louis XVIII. They returned to Russia when Alexander I became Tsar, but in mid-1807 the treaty between Napoleon and Alexander forced them to take refuge in Britain. There, at Hartwell House, King Louis reconstituted his court, and Louis-Antoine was granted an allowance of £300 a month. Twice (in 1807 and 1813) he attempted to return to Russia to join the fight against Napoleon, but was refused permission by the Tsar. He remained in Britain until 1814 when he sailed to Bordeaux, which had declared for the King. His entry into the city on 12 March 1814 was regarded as the beginning of the Bourbon restoration. From there, Louis Antoine fought alongside the Duke of Wellington to bring about Napoleon’s overthrow. Flight to Britain and return Louis Antoine was unable to prevent Napoleon's return to Paris as chief of the royalist army in the southern Rhône River valley, and he was again forced to flee to Britain during the "Hundred Days". He loyally served Louis XVIII after the final defeat of Napoleon at Waterloo. In 1823, he commanded a French army sent into Spain to restore the King's absolute powers, known as the Hundred Thousand Sons of Saint Louis. He was victorious in the Battle of Trocadero, after which the reactionary power of King Ferdinand VII of Spain was firmly restored. For this achievement, he was awarded the title of a Prince of Trocadero. Upon the King's death in 1824, his father became King Charles X and Louis-Antoine became Dauphin, heir-apparent to the throne. He supported his father's reactionary policy of purging France of her recent revolutionary and imperial past, expelling former imperial officers from the Army. July Revolution Masses of angry demonstrators demanded the abdication of Charles and of his descendants in July 1830, in what became known as the July Revolution, in favour of his cousin Louis Philippe, Duke of Orléans. They sent a delegation to the Tuileries Palace to force his compliance. Charles reluctantly signed the document