Antique military cavalry trousers size 32

For sale here we have a pair of antique ,litany, slim cut like Cavalry in a fairly coarse twill. We're not military experts here but suspect that these are quite old, certainly early 20th century. 

Measurements

 Waist -33 ( 1.5" spare)

 Inside leg - 32.5

Condition - Excellent for the age but there is a small repair.