equestrian military olive drab suspender belt loops stirrups double knee cargo p

Description

Facts/Observations:
Material is olive-drab-colored cotton
Cargo- and rear pockets have button closures
Two Buttons inside waistband, front and back, for suspenders
Front pockets and fly each side have working zippers branded "Talon," and the fly is topped with 2 buttons.
The front knee areas are double-thickness from crotch down to mid-shin
There is some spot-staining but wear and fading appears minimal, possibly because the fabric is so substantial.  This garment weighs 2 lbs. 6 oz. (For comparison, a 46 x 30 pair of Levi's 550's weighs 1 lb. 15 oz.)
Tags:
The 'redacted' black ink stamp in the rear waist band (inside)
looks like
"Waist 36 Inseam 34"
Next is that is handwritten in blue ink "34  33"
The "CS" tag is a laundry tag, stapled in, with "Cp McCoy," presumed to mean Corporal McCoy
The handwritten blue ink on right-rear pocket liner is illegible with the exception of numerals
Assumptions:
Military.  Evidence--Corporal McCoy
Military.  Evidence--Ink stamping of sizes on waistband
Military.  Evidence--Button-closure pockets (with zippered exceptions)
Equestrian.  Evidence--Stirrups
Equestrian.  Evidence--Jodhpur-like large hip and thigh measurements, relative to waist and shin
Theme--Millitary/Equestrian
Time Period Manufactured--SWAG, 1930's - 1950's.  Evidence--lack of modern-era tags.
Please pardon the verbose nature of this list.
I'm trying to lay out the pertinent characteristics so as to come to an accurate description of these very unique breeches.
Photos contain precise measurements.