On another blog I read a series of comments about using foil for flags and pennants.
The commentary was about finding 'scrap' sources for essentially 'free' materials to do the flags with.
The pneumatic tube repair patch was stuck to a foil section that was reasonably stiff (more than the tinfoil used in cooking) and after the tire patch was used was now essentially waste. Therefore 'free'.
So my new lancers were going to make use of this material.
4 hours ago