Souvenirs from artillery captain Charles Guieysse including: - Two editions of "Règlement de manœuvres pour l'artillerie allemande" translated by Charles GUIEYSSE. Berger Levrault & Cie, 1894 and 1898. - Personal notebook kept by squadron leader Guieysse presenting transcriptions of decisions taken between February 1, 1918 and January 25, 1919 at the head of his unit. Approx. 100 handwritten pages. Six documents and correspondence attached. - An autochrome showing artillerymen in front of a casemate. 9 x 6 cm In its box from Maison Lumière & Jougla in Lyon. - Important photographic album (31 x 24 cm) of 97 wartime photographs by Charles GUIEYSSE between 1914 and April 1917 (Aisne). Various formats, including a few large ones (18 x 13 cm) in the "Argonne cagna" with his nephew Jules GUIEYSSE, views of artillerymen, trenches, airplanes, various assignments of the 46th battery, each photo captioned. - Photo album (13 x 19 cm) of 59 photographs, probably from a chasseurs à cheval officer between April and May 1915, maneuver scenes and daily life, 10th chasseurs passing through Doullens, Indian soldiers. Biography: Charles Guieysse (1868-1920) A Polytechnique graduate in 1889, he became an artillery lieutenant in the army, but resigned in 1899, disliked by his superiors for his socialist and Dreyfusard views. A friend of Charles Péguy and a thinker on French socialism, he published the review "Pages libres", then served in the artillery during the war. He returned in 1919, was elected mayor of Croissy-sur-Seine, and died in 1920 of an attack of uraemia.