First flown in 1930, the Junkers Ju 52 was the main transport aircraft of the German air force right through WW2. They were used to drop paratroopers in the world's first major airborne operation against Holland in 1940. The Portuguese used them in action as a paratroop platform as late as the sixties in Angola. There were also popular both before and after the war as airliners. Nearly 5,000 were produced of which 17 still exist in museums and another eight are airworthy.
This seaplane version served in the Norwegian campaign in 1940 and later in the Mediterranean. We've not built one of these (the floatplane version is comparatively recent) but it looks good and purposeful.