Japanese Canteens

I found this had quite helpful information on Japanese canteens.

The Evolution of IJA Canteens (1889-1945) Expanded Version

I find their early interest in water filtration most interesting, particularly considering the failure of the War Office to take a similar interest, despite the technology having been invented in the UK and in civilian use all over the Empire well before the 2nd Boer War.

The famous "enteric fever" that killed more than combat IIRC, was mostly a problem of dirty water.

Complacency and inertia as ever.

The information on the bottom of the canteen is interesting and if, like me, you don't understand Japanese the link above is very useful to understanding some of the markings. Note how the Japanese marked the canteens contains recycled aluminium, for example. Perhaps to help when the time came to recycle that canteen it's self?