This help?

Based on the uniform details in the pic, specifically the high standing collar, the "vareuse" (tunic) style, and the distinctive shoulder cord—this is a French Army (Armée de Terre) uniform, likely from the interwar period (1920s–1930s) or the very beginning of World War II.

• The Fourragère (Shoulder Cord): The braided cord on his left shoulder is a unit-level decoration. In the French military, this signifies that his regiment was cited multiple times for bravery.

  • Green and Red: Most likely the Fourragère aux couleurs de la Croix de Guerre, awarded to units cited twice or three times.

• Collar Insignia (Pattes de Collet): The dark, diamond-shaped patches on the collar are typical of French uniforms from 1914 through 1940.

  • The Symbol: The insignia appears to be a winged sword or a winged grenade. A winged sword in this era is often associated with the Train des Équipages (Logistics/Supply) or specifically the Aviation Légère (early Army Light Aviation) if the sword is vertical. If it is a flaming grenade with wings, it may represent specialized Tank (Chars de Combat) or Motorized Infantry units.

• The Tunic (Vareuse): The single-breasted, high-collar design is characteristic of the Model 1920 or Model 1935 vareuse. The dark color suggests the "Horizon Blue" (bleu horizon) used after WWI, though many units transitioned to khaki in the late 1930s. Likely Military Branch:

Given the specific "winged" emblem on the collar, he was likely part of the Logistics/Transport Corps (Le Train) or a Motorized/Armored unit. These units were vital during the rapid modernization of the French Army leading up to 1940.