Prince Louis did accompany the French Armée du Nord that entered Belgium to support its separation from the United Kingdom of the Netherlands; there he took part in the Siege of Antwerp (1832).

He sailed a third time for Algeria in 1841, and served under General Bugeaud, taking part in the expedition to get provisions to Médéa on 29 April, and in sharp fighting near Miliana on 3 to 5 May.

The death of his elder brother, Ferdinand, Duke of Orleans, in 1842 gave him a position of greater importance as the natural regent in the case of the accession of his nephew, the young Count of Paris.

He followed his sister-in-law, Hélène, Duchesse d'Orléans, and her two sons to the chamber of deputies, but was separated from them by the rioters, and only escaped finally by disguising himself in the uniform of a national guard.

Lengthy negotiations ended in 1857 with a letter, written by Nemours, as he subsequently explained, at the dictation of his brother, François, prince de Joinville, in which he insisted that Chambord should express his adherence to the tricolour flag and to the principles of constitutional government.

In 1871 the Orléans princes renewed their professions of allegiance to the senior branch of their house, but they were not consulted when the count of Chambord came to Paris in 1873, and their political differences remained until his death in 1883.