Vintage circa 1950s Algerian war era French army para trousers.
All cotton, a herringbone twill weave (HBT) in "lizard" pattern camo.   
 
Marked 31 inside on the label. Please refer to the measurements below. 
 
Stamped Appourchaux Bethune inside. The issue stamp is blurred so please go by the measurements below.  This style was issued between 1947 to 1956 I believe.
 
Buttoned fly, side pockets with three popper studs to fasten.  Side cinch tabs at the waistband and belt loops. Flapped seat pocket and flapped leg pockets that fasten with popper studs. Drawstring hems. 
 
Very good condition and they look to have been only lightly worn. A few minor marks, minor signs of wear. In good order. 
 
Waist is 31" in total- you can cinch them in further using the side tabsOutside leg length is 44 1/2"inside leg/ inseam is 32"Rise is 15"Across the hems is 9 1/4"Across at approx "hip" level (these are men's trousers) is 18 1/2" side to side