Olivier Mazel

Olivier Charles Armand Adrien Mazel (16 September 1858 – 10 March 1940) was a French Army general during World War I.

He commanded the First (25 March 1916 – 31 March 1916) and Fifth Armies (31 March 1916 - 22 May 1917) during the war.

One of General Robert Nivelle's appointments he was removed from command of the Fifth Army by General Émile Fayolle.

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Olivier Mazel (right) with Russian Lieutenant General Nikolai Aleksandrovich Lokhvitsky in February 1917.