She joined the Polish insurrection against Russia in 1863, dressed as a man, acted as a courier on the side of the Polish rebels,[2] but was captured by the Russians and then released.

[3] Following the Battle of Sedan (1870) in the Franco-Prussian War, Lix joined the French Army under General Pierre de Failly.

She was a sniper in Lamarche as a lieutenant before joining General Albert Cambriels' troops.

She participated in the defense of Vosges and the city of Langres, and distinguished herself during the Battle of Nompatelize on 6 October 1870.

In 1910, an organisation of women of Strasbourg and Colmar donated a silver sword in her honour to the Musée de l'Armée in Paris.