Edit the word 'flak' out of the game altogether. It was not used until 1938. 'Arche' was the WWI word, named after a popular song about 'Archibald'. Typical British usage of the time to take something deadly and give it a funny name. cf. 'Tripehound' and 'Zepps in a cloud' - this last being sausages and mash!

LG 27" 27mp65 monitor; EVGA GTX970 GPU; AMD Ryzen 3500 CPU; Corsair 750w PSU; MSI X470 mobo

RAF 1966-73 Cpl Engine Fitter (Retd.) Trenchard brat 206th Entry
DBA and systems programmer 1981-2005. Now retired since 2014