Inter War Years
- 21st Century
- Late 20th Century
- Cold War Period
- Second World War
- Inter War Years
- First World War
- Early 20th Century
- 19th Century
- 18th Century
- 17th Century
- 16th Century
- 15th Century
In the context of twentieth century history, the interwar period occurred between the end of the First World War in November 1918 and the outbreak of the Second World War in September 1939. Characterised by post-war economic boom followed by world-wide depression and the totalitarian regimes of Soviet Russia, Fascist Italy, Nazi Germany and Imperial Japan, major conflicts during the succeeding two decades before the German invasion of Poland were the Polish-Soviet War (1919-21), Greco-Turkish War (1919-22), Italian Invasion of Abyssinia (1935-36), Spanish Civil War (1936-39) and the Japanese Invasion of China (1937). Important military developments at this time included advances in armour and aircraft design and tactics subsequently employed during Blitzkrieg operations of the next war.
Sino-Japanese War (1937-1945)
Spanish Civil War (1936-1939)
Brazilian Civil War (1932)
Chaco War (1932-1935)
Colombia Peru War (1932-1933)
Paraguayan Civil War (1922-1923)
Rif War (1920-1926)
Inter War Years (1919-1938)
Third Anglo-Afghan War (1919-1920)
Russian Civil War (1917-1922)