Voyron was repatriated to France in 1870. He was wounded in the Battle of Bazeilles while serving in the 12th Army Corps during the Franco-Prussian War. He was then interned in Leipzig, Germany until 1871. In 1872, Voyron was sent to New Caledonia in the southeastern Pacific Ocean, where he remained for four years. He was then appointed lieutenant-colonel and served in Senegal twice, and then was appointed colonel in 1885, commanding the Fourth Marine Infantry Regiment, then left for Tonkin, Vietnam in 1887.