Vintage Military Field Trousers 34x30 Metal Buttons Cotton OD Distressed WWII?

Pre-loved men's Vintage Military Field Trousers Size 34x30 on tag--see approximate measurements Shade of OD green Metal button fly Metal buttons around waist Vintage Grunge Distressed Slight destroying We believe these pants are from the WWII era, but we are not experts Cotton Have faded/discolored areas--see pictures for examples Show wear--see pictures foe examples Some of the metal buttons have rust--see pictures for examples Have small hole left pant leg--see pictures May have wrinkles from hanging in the closet Measure approximately when laid flat: 17" across front waist, 29 1/2" inseam, & 41 1/2" out seam