Just to make sure I have understood this correctly The Orders of 1922 (that continued all the way through WW2 upto 1948) said... 1. Minister for Defence states a flight jacket should look a certain way and have certain features. Example: Jacket is black; Made from leather; Has X pockets... 2.Commanding Officer of each individual unit (squadron?)had the authority to choose what type of jacket he wanted his aircrew to wear (within the parameters/requirements stated by the Defence Minister). So it sounds like there was "some" choice by commanding officers and so flight jackets might look slightly different from unit to unit? By the way... did aircrew buy their own jacket or did the Commanding Officer put in a request to a particular local factory? Or did ALL come from Zetkin?