I often heard people pointing out a mistake in the half-round series work of 1953: a grenadier with "Flambeau" written under the base.

No! This character did exist. It represents Jean-Pierre Séraphin Flambeau named " Flambard ".

He was 14 when he joined the army, he participated in 16 battles among which Austerlitz, Eylau, Somo-Sierra, Eckmühl, Essling, Wagram and Smolensk. He also owned a legendary outspokenness, and its numerous monologues were resumed in L'Aiglon, by Edmond Rostand

We owe him the expression "fight for the glory and for the plums".

Prisoner of the Austrians, he committed suicide by stabbing himself.