Amsterdam was occupied by the Nazi's during WW2.
Japan during WW2.
During WW2 the Germans occupied almost the entire continent of Europe except for Spain and Portugal.
Sweden remained neutral, but a supporter of Germany during WW2. Sweden was not attacked or occupied by Germany.
Iran was occupied by the Soviet Union and United Kingdom during the WW2.
The US except during WW2 when the Japanese occupied the Islands.
Russia occupied North Korea and the U S occupied South Korea after WW2
during ww2 Russia fought the axis power. However me being from Ireland I know that Ireland stayed neutral during ww2, unfortunately Ireland hadn't a choice during ww1 because Ireland was a colony of Great Britain.
Denmark was occupied by the Germans in WW2. This was a very benevolent occupation as King Christian X basically surrendered.
china Singapore hong kong malaya
These countries were occupied by USSR after the WW2.
The USA occupied Japan until after the Korean War.