Does sound feasible ...... but I can just imagine all the onion skins it would take for a regiments quota of these smocks !! :headhurt: That the 1st Pattern Denison Smocks were made with vegetable dyes that were designed to be "washed out" if the combatant was in occupied territory. This made the smock look like the traditional French farmers smock and allowed the wearer to blend in. kamouflage.net — 1942 Denison smock camouflage
I am reminded that my Mum and Aunts used to cover their legs in gravy browning and use pens to draw their seams. I never had the courage to ask if dogs were overly attracted to them.
I used onion skins to tie-dye t-shirts in the 1980s As to uniforms being made to be washable, what if it rains?