Letters
Air purification of Subs in WW1 Dear Sir, A friend of mine is in need of info on the breathing air of Subs in WW1. He says they had something to do with the chemical powder of lie, and was told that German subs had the best breathing air filters ever. If you could direct me to find more Info on this subject I would be most happy. Thank You,
This may help.
Regards, |