Abkhazia, Armenia, Belarus, Kazakhstan, South Ossetia, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan were all part of the Soviet Union and had soldiers who died defending their country against the Nazis and the Axis Powers.

Bosnia and Herzegovina, Republika Srpska, Serbia were part of Yugoslavia who was invaded by the Nazis and Italians.

China, Vietnam, Laos, Indonesia were invaded and occupied by Japan.

Ethiopia first victim of WW2, invaded and occupied by Italy.

Burkina Faso and Republic of the Congo were part of the French Empire.

Egypt, India, Zimbabwe, South Africa, Myanmar, Israel, Palestine were part of the British Empire.

Mongolia helped the Soviets.

Slovakia was invaded by Nazi Germany and occupied.

North Korea occupied by Japan.

Brazil actually sent out troops to help the Americans in the Italian campaing, something even Putin talked about

Libya was colonized by Italy.

Cuba, Venezuela and Nicaragua declared war and gave the allied troops support.

Equatorial Guinea, Guinea-Bissau, Iran remained neutral until the near end of the war.