We've mentioned the good folks at Vintage Wings of Canada many times in these pages. Their latest article is an eye-opener. 'Anything But Wheels' looks at how floats and skis were fitted to aircraft during the Second World War in an attempt to expand their usefulness in various theaters of combat. Japan, Germany and the Soviet Union used them in combat, but US and British forces did not develop them that far.
There's far too much information to condense here, so I'll simply put up a few photographs (out of dozens in the article) to illustrate what was done.
There are many more images at the link. Fascinating stuff for aircraft and military enthusiasts.