The Home Guard in Britain during especially the post-Dunkirk period had, and would used after an invasion, some weird and wonderful stuff.
https://www.iwm.org.uk/history/the-real-dads-army
https://en.wikipedia.org/wiki/Smith_Gun
https://en.wikipedia.org/wiki/Home_G...United_Kingdom)
From memory they have something that fired Molotov cocktails...
The 'different' stuff is here:
http://www.badwellashheritage.co.uk/...he-home-guard/