Russia occupied the Baltics in 1940, long before they lost a single man in World War II. Unless, of course, you want to count the million men they lost fighting against evil Finnish Imperialist Agression, of course.
In fairness to the Russians, they attacked both Finland and the Baltic Republics in order to extend their line of military occupation further west, as a defensive measure against the Germans.
The US occupied Iceland in 1941 for much the same reasons, but of course we didn't repress the population, and we left after the war.Did you? I thought you're still there. (But of course, the part about repression is spot on...in fact Iceland won its independence from Denmark through the US occupation.)
I think a benign military occupation as a defensive move against the extreme German threat of the time might have been acceptable, but to occupy and repress those countries long after the end of the war was not.