





While the British MK IX tank of WWI has the distinction of being the first armored personnel carrier, it is also the first amphibious tank with one example known as “The Duck” refitted with buoyancy tanks in 1918.
Here are a few links with more info:
https://en.wikipedia.org/wiki/Mark\_IX\_tank
https://www.historicalfirearms.info/post/60794141629/the-british-mark-ix-tank-the-first-armoured
u/ZaxZone — 14 days ago