Complex sentence: On the outbreak of the Franco-Prussian war in 1870 Ogé enlisted with the army of the Loire and returned to work with Carpeaux when hostilities ceased and when Carpeaux died he joined the studio of Jean Louis Adolphe Eude.
Split into simpler sentences: On the outbreak of the Franco-Prussian war in 1870, Ogé enlisted with the army of the Loire and returned to work with Carpeaux when hostilities ceased. When Carpeaux died he joined the studio of Jean Louis Adolphe Eude.