Here are my pictures from my trips around Sweden they may help you, Sweden was Neutral in world war II and mainly supplied Germany with Iron ore and other materials however it was based around the German promise that it wouldn't invade if Sweden remained Neutral and assisted the Germans (as did Finland).
Nordkapparen
https://www.flickr.com/photos/131313...57670183441963
HMSwS U3 in Malmo (World war II Era)
https://www.flickr.com/photos/131313...57664022526634
HMSwS Hajen 1 and Neptun
https://www.flickr.com/photos/131313...57664037795613