If you're improving your kit for The Patrol, make sure you have a high quality blouse before you go worrying about Mounted Services Jackets.  This fatigue blouse is copied from an original Smith Brothers contract example by the Honest Sutler and features all the neat pattern and construction details of the original,  Tart's excellent new blouse flannel that matches the original exactly, and even a lightweight drab flannel lining with a period selvedge.

Lined Fatigue Blouse - The Patrol