Several countries significantly changed allegiance during World War II, most notably Italy, Romania, Bulgaria, Finland, the Soviet Union, and France, moving between the Axis and Allied powers due to invasions, internal coups, or shifting strategic interests, with Italy joining the Allies after 1943, Romania and Bulgaria defecting in 1944, and Finland fighting the Soviets initially then joining the Allies later, while the USSR switched from pact to ally after being invaded by Germany**.
You already mentioned the Soviet Union (which changed sides relative to Germany (due to the German invasion) and later relative to Japan (invading Manchuria). In addition to them, Finland changed sides twice (relative to Germany) or once (relative to the Soviet Union), and France twice (relative to Germany).
Popular support for Romania's participation in the war faltered, and the German–Romanian fronts collapsed under the Soviet onslaught. King Michael of Romania engineered the 1944 Romanian coup d'état that deposed the Antonescu regime and put Romania on the side of the Allies for the remainder of the war.
Italy has a unique distinction in both World Wars: it switched sides! In 1914, when World War I began in Europe, Italy was a Central Power allied with Germany and Austria-Hungary. The following year, however, Italy entered the war as an Allied Power, fighting against Austria.
In the Allied-held south, the Kingdom of Italy, which faced no resistance movement, officially became a co-belligerent of the Allies and declared war on Germany on 13 October 1943. The Allied Italian campaign after the invasion of Sicily in July of 1943 progressed slowly.
From the Finnish POV, they didn't switch sides: both wars were against the USSR, and the Continuation War was portrayed as a necessary or at least convenient continuation of the Winter War. From the perspective of Finland's relationship with the Soviet Union, Germany and Britain changed sides.
(Paul) Joseph Goebbels – One of Adolf Hitler's closest associates and most devout followers, known for zealous oratory and antisemitism.
On September 28, 1918, in an incident that would go down in the lore of World War I history—although the details of the event are still unclear—Private Henry Tandey, a British soldier serving near the French village of Marcoing, reportedly encounters a wounded German soldier and declines to shoot him, sparing the life ...
He believed that Adolf Hitler could not be trusted and that any agreement with the Nazis would only lead to further destruction down the line. Churchill argued that negotiating would mean accepting Nazi domination of Europe, which he saw as morally and strategically unacceptable.
Military commanders took advice from medical staff and were much more pragmatic. They realised that providing condoms would prevent sexually transmitted diseases and maintain manpower levels. Military personnel also used the condoms to keep sand out of gun barrels, which saved time when they cleaned their weapons.
The Battle of the Bulge is considered the largest and bloodiest single battle fought during WWII. More than 19,000 U.S. soldiers died during that winter, and more than 70,000 were wounded or went missing.
The Russian Armed Forces are the world's fifth largest military force, with about one million active-duty personnel and close to two million reservists.
Hitler had always envisioned that a successful war against the Soviet Union would be necessary to achieve two of the Nazis ideological aims: Lebensraum and the destruction of communism .
Was Russia with the Allies in WW2? The Soviet Union (commonly called Russia) remained neutral with Nazi Germany until attacked in June 1941. Then the Soviet Union allied with Britain. After the United States joined the war in December 1941, the USSR also allied with this country against Nazi Germany.
Ever since Mussolini began to falter, Hitler had been making plans to invade Italy to keep the Allies from gaining a foothold that would situate them within easy reach of the German-occupied Balkans. On the day of Italy's surrender, Hitler launched Operation Axis, the occupation of Italy.
Leningrad, along with Moscow and Kiev, was one of the major objectives of the German offensive launched on 21 June 1941, but the city was not taken during the attack.
One of the main considerations that led the Swedish government to declare Sweden a non-belligerent state was concern that they might otherwise lose control of the internal situation in Sweden. The Soviet demands on Finland in the months prior to the outbreak of war had roused public opinion.