After graduation, he was stationed Vitoria-Gasteiz, Oviedo, Alicante,Valencia, Cartagena and Avila.

He repeatedly made several military exploits on the battlefield and was seriously injured which resulted in his promotion to Captain.

Returning to Spain after the war in 1866, he suppressed an uprising in the San Gil barracks led by Juan Prim.

Jáudenes was in Manila when the Spanish parliament, the Cortes, learned of Governor-General Basilio Augustín's attempt to negotiate the surrender of the army to Filipinos under Emilio Aguinaldo.

[1] By Royal Decree of October 5, 1898, Jaúdenes was removed from all his positions and after his return to Madrid, tried in the Supreme Council of War and Navy for his surrender of the Plaza de Manila.