<Dt> Outbreaks of Wars between Nations during World War II </Dt> <Dt> Table Legend: Concerning "Declaration of War: Type ." A = Attack without prior, formal declaration of war; U = State of war arrived at through use of ultimatum; W = Formal declaration of war made . </Dt> <Table> <Tr> <Th> Date </Th> <Th> Initiator Nation (s) </Th> <Th> Targeted Nation (s) </Th> <Th> Declaration of War: Type </Th> <Th> Notes / Comments </Th> <Th> Document / Event </Th> </Tr> <Tr> <Td> 1939 - 09 - 01 </Td> <Td> Nazi Germany </Td> <Td> Poland </Td> <Td> U </Td> <Td> German attack began at 4: 44 am </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1939 - 09 - 01 </Td> <Td> Slovak Republic </Td> <Td> Poland </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1939 - 09 - 03 </Td> <Td> United Kingdom France </Td> <Td> Nazi Germany </Td> <Td> U </Td> <Td> At 11 a.m., British PM, Neville Chamberlain publicly delivered his Ultimatum Speech . </Td> <Td> Document <P> Declaration </P> </Td> </Tr> <Tr> <Td> 1939 - 09 - 03 </Td> <Td> Australia New Zealand </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> <P> Australia </P> <P> New Zealand </P> </Td> </Tr> <Tr> <Td> 1939 - 09 - 04 </Td> <Td> Nepal </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> <P> Declaration </P> </Td> </Tr> <Tr> <Td> 1939 - 09 - 06 </Td> <Td> South Africa </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1939 - 09 - 10 </Td> <Td> Bahrain Canada Oman </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Declaration <P> Declaration </P> <P> Declaration </P> </Td> </Tr> <Tr> <Td> 1939 - 09 - 17 </Td> <Td> Soviet Union </Td> <Td> Poland </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1939 - 11 - 30 </Td> <Td> Soviet Union </Td> <Td> Finland </Td> <Td> </Td> <Td> First war between these nations . </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 04 - 09 </Td> <Td> Nazi Germany </Td> <Td> Denmark Norway </Td> <Td> </Td> <Td> </Td> <Td> Invasion of Denmark Invasion of Norway </Td> </Tr> <Tr> <Td> 1940 - 04 - 12 </Td> <Td> United Kingdom </Td> <Td> Faroe Islands </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 05 - 10 </Td> <Td> Nazi Germany </Td> <Td> Belgium Netherlands </Td> <Td> A / W </Td> <Td> Date of the German offensive in the West, W from Belgium and the Netherlands . </Td> <Td> <P> Belgium </P> <P> Netherlands </P> </Td> </Tr> <Tr> <Td> 1940 - 05 - 10 </Td> <Td> Nazi Germany </Td> <Td> Luxembourg </Td> <Td> </Td> <Td> </Td> <Td> Luxembourg </Td> </Tr> <Tr> <Td> 1940 - 05 - 10 </Td> <Td> United Kingdom </Td> <Td> Iceland </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 06 - 10 </Td> <Td> Italy </Td> <Td> France United Kingdom </Td> <Td> </Td> <Td> </Td> <Td> France and the UK </Td> </Tr> <Tr> <Td> 1940 - 06 - 10 </Td> <Td> Canada </Td> <Td> Italy </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1940 - 06 - 11 </Td> <Td> South Africa Australia New Zealand </Td> <Td> Italy </Td> <Td> </Td> <Td> </Td> <Td> <P> South Africa </P> <P> Australia </P> <P> New Zealand </P> </Td> </Tr> <Tr> <Td> 1940 - 06 - 11 </Td> <Td> France </Td> <Td> Italy </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1940 - 06 - 16 </Td> <Td> Soviet Union </Td> <Td> Lithuania </Td> <Td> </Td> <Td> </Td> <Td> Occupation </Td> </Tr> <Tr> <Td> 1940 - 06 - 17 </Td> <Td> Soviet Union </Td> <Td> Estonia Latvia </Td> <Td> </Td> <Td> </Td> <Td> Occupation </Td> </Tr> <Tr> <Td> 1940 - 06 - 25 </Td> <Td> United Kingdom </Td> <Td> Vichy France </Td> <Td> </Td> <Td> Vichy France cuts off diplomatic relations with the United Kingdom on 8 July 1940 . </Td> <Td> Attack </Td> </Tr> <Tr> <Td> 1940 - 09 - 09 </Td> <Td> Italy </Td> <Td> Egypt </Td> <Td> </Td> <Td> Egypt maintained neutrality until 1945 . </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 09 - 22 </Td> <Td> Japan </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 09 - 23 </Td> <Td> Free France Australia </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1940 - 10 -?? </Td> <Td> Thailand </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Franco - Thai War </Td> </Tr> <Tr> <Td> 1940 - 10 - 28 </Td> <Td> Italy </Td> <Td> Greece </Td> <Td> U </Td> <Td> Italy invades Greece </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 02 - 05 </Td> <Td> Free France </Td> <Td> Italy </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 04 - 06 </Td> <Td> Nazi Germany </Td> <Td> Greece </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 04 - 06 </Td> <Td> Nazi Germany Bulgaria </Td> <Td> Yugoslavia </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 04 - 06 </Td> <Td> Italy Hungary </Td> <Td> Yugoslavia </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 04 - 14 </Td> <Td> Nazi Germany </Td> <Td> Egypt </Td> <Td> </Td> <Td> Egypt maintained neutrality until 1945 . </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 05 - 02 </Td> <Td> United Kingdom </Td> <Td> Iraq </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 06 - 08 </Td> <Td> Free France </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 06 - 22 </Td> <Td> Nazi Germany Italy Romania </Td> <Td> Soviet Union </Td> <Td> </Td> <Td> A timed - declaration of war was given by Germany at the time of the attack </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 06 - 22 </Td> <Td> Tuva </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> Tuva was a client state of the Soviet Union . Part of the USSR from 1944 . </Td> </Tr> <Tr> <Td> 1941 - 06 - 25 </Td> <Td> Finland </Td> <Td> Soviet Union </Td> <Td> </Td> <Td> Finland recognized a state of war with the Soviet Union; second war between these nations . </Td> <Td> Continuation War </Td> </Tr> <Tr> <Td> 1941 - 06 - 27 </Td> <Td> Hungary </Td> <Td> Soviet Union </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 08 - 25 </Td> <Td> Soviet Union United Kingdom Australia </Td> <Td> Iran </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1941 - 12 - 06 </Td> <Td> United Kingdom </Td> <Td> Finland </Td> <Td> U </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 07 </Td> <Td> United Kingdom </Td> <Td> Romania Hungary </Td> <Td> U </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 07 </Td> <Td> Japan </Td> <Td> United States United Kingdom </Td> <Td> </Td> <Td> W (Japanese point of view); A The "Western" (Attack on Pearl Harbor); </Td> <Td> <P> Declaration </P> <P> Attack on Pearl Harbor </P> <P> Invasion of Malaya </P> <P> Attack on Singapore </P> <P> Invasion of Hong Kong </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 07 </Td> <Td> Canada Australia New Zealand </Td> <Td> Japan Finland Romania Hungary </Td> <Td> </Td> <Td> </Td> <Td> <P> Canada </P> <P> Australia </P> <P> New Zealand </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 07 </Td> <Td> United Kingdom </Td> <Td> Romania Finland Hungary </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 07 </Td> <Td> Panama </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 08 </Td> <Td> United States United Kingdom Australia Philippines Costa Rica Dominican Republic El Salvador Guatemala Haiti Honduras Netherlands New Zealand Nicaragua </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> British declaration <P> Australian declaration Cost Rican declaration Dominican Republic's declaration Salvadorian declaration Haitian declaration Honduran declaration Dutch declaration New Zealand's declaration Nicaraguan declaration Philippine declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 08 </Td> <Td> South Africa </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> South African declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 08 </Td> <Td> China </Td> <Td> Italy Japan </Td> <Td> </Td> <Td> China and Japan had been at war since 1937 </Td> <Td> Second Sino - Japanese war <P> Declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 08 </Td> <Td> Mongolia </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> <P> Mongolian declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 09 </Td> <Td> Australia New Zealand </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> <P> Australian declaration </P> <P> New Zealand's declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 11 </Td> <Td> Nazi Germany Italy </Td> <Td> United States </Td> <Td> </Td> <Td> </Td> <Td> <P> German declaration </P> <P> Italian declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 11 </Td> <Td> United States </Td> <Td> Nazi Germany Italy </Td> <Td> </Td> <Td> </Td> <Td> Germany <P> Italy </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 11 </Td> <Td> Poland (in - exile) </Td> <Td> Japan </Td> <Td> </Td> <Td> Japan rejected declaration of War . Prime Minister Hideki Tōjō's answer was following: "We don't accept the Polish declaration of war . The Poles, fighting for their freedom, declared war under the British pressure". </Td> <Td> </Td> </Tr> <Tr> <Td> 1941 - 12 - 12 </Td> <Td> Romania Bulgaria </Td> <Td> United States United Kingdom </Td> <Td> </Td> <Td> </Td> <Td> <P> Romanian declaration </P> <P> Bulgarian declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 12 </Td> <Td> Australia Netherlands </Td> <Td> Portugal </Td> <Td> </Td> <Td> Portugal maintained neutrality throughout World War II . </Td> <Td> <P> Invasion </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 13 </Td> <Td> United Kingdom New Zealand South Africa </Td> <Td> Bulgaria </Td> <Td> </Td> <Td> </Td> <Td> <P> British declaration </P> <P> New Zealand's declaration </P> <P> South African declaration </P> </Td> </Tr> <Tr> <Td> 1941 - 12 - 13 </Td> <Td> Hungary </Td> <Td> United States </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 14 </Td> <Td> Independent State of Croatia </Td> <Td> United States United Kingdom </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 16 </Td> <Td> Czechoslovakia (In - exile) </Td> <Td> Nazi Germany Italy Finland Romania Hungary Japan Bulgaria Independent State of Croatia </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 17 </Td> <Td> Albania </Td> <Td> United States </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 19 </Td> <Td> Nicaragua </Td> <Td> Bulgaria Hungary Romania </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1941 - 12 - 20 </Td> <Td> Belgium </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 01 - 01 </Td> <Td> United Nations </Td> <Td> Axis Powers </Td> <Td> </Td> <Td> Declared during Arcadia Conference </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 01 - 06 </Td> <Td> Australia </Td> <Td> Bulgaria </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 01 - 16 </Td> <Td> Iraq </Td> <Td> Nazi Germany Italy Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 01 - 25 </Td> <Td> United Kingdom New Zealand South Africa </Td> <Td> Thailand </Td> <Td> </Td> <Td> </Td> <Td> <P> British declaration </P> <P> New Zealand's declaration </P> <P> South African declaration </P> </Td> </Tr> <Tr> <Td> 1942 - 01 - 19 </Td> <Td> Japan </Td> <Td> Portugal </Td> <Td> </Td> <Td> Portugal maintained neutrality throughout World War II . </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1942 - 05 - 05 </Td> <Td> South Africa Netherlands (in - exile) Poland </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1942 - 05 - 05 </Td> <Td> United Kingdom Northern Rhodesia Southern Rhodesia South Africa Tanganyika Belgian Congo </Td> <Td> Vichy France Japan </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1942 - 05 - 22 </Td> <Td> Mexico </Td> <Td> Nazi Germany Italy Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 08 - 22 </Td> <Td> Brazil </Td> <Td> Nazi Germany Italy </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1942 - 11 - 08 </Td> <Td> United States Canada </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1942 - 11 - 10 </Td> <Td> Nazi Germany Italy </Td> <Td> Vichy France </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1942 - 12 - 14 </Td> <Td> Ethiopia </Td> <Td> Nazi Germany Italy Japan </Td> <Td> </Td> <Td> On 3 October 1935, Italy invaded Ethiopia without a formal declaration of war . In response to the Italian invasion, Ethiopia declared war on Italy . Most of Ethiopia was occupied by Italy in 1936, however parts of Ethiopia remained under the control of the Ethiopian Patriots Movement, which begun its guerrilla war against the occupying Italian forces the day Addis Ababa fell in May 1936 . In May 1941, Addis Ababa was liberated by the Gideon Force, restoring sovereignty to Ethiopia . </Td> <Td> Second Italo - Ethiopian War <P> Declaration </P> </Td> </Tr> <Tr> <Td> 1943 - 09 - 01 </Td> <Td> China Regime of Wang Jingwei </Td> <Td> Allied Powers </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1943 - 04 - 02 </Td> <Td> Bolivia </Td> <Td> Axis powers </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1943 - 09 - 09 </Td> <Td> Iran </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1943 - 10 - 13 </Td> <Td> Italy </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> Italy had changed side after the fall of Mussolini . The Declaration of War was given by Pietro Badoglio to the German ambassador in Madrid . </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1943 - 11 - 26 </Td> <Td> Colombia </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1944 - 01 - 17 </Td> <Td> Free France </Td> <Td> Italian Social Republic </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1944 - 01 - 27 </Td> <Td> Liberia </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1944 - 06 - 06 </Td> <Td> France </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1944 - 07 - 25 </Td> <Td> France </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Invasion </Td> </Tr> <Tr> <Td> 1944 - 08 - 25 </Td> <Td> Romania </Td> <Td> Nazi Germany Hungary </Td> <Td> </Td> <Td> Romania switched sides </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1944 - 09 - 05 </Td> <Td> Soviet Union </Td> <Td> Bulgaria </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1944 - 09 - 08 </Td> <Td> Bulgaria </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> Bulgaria switched sides </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1944 - 09 - 15 </Td> <Td> Nazi Germany </Td> <Td> Finland </Td> <Td> </Td> <Td> </Td> <Td> Lapland War </Td> </Tr> <Tr> <Td> 1944 - 09 - 23 </Td> <Td> Philippines </Td> <Td> United States United Kingdom </Td> <Td> </Td> <Td> </Td> <Td> Lapland War </Td> </Tr> <Tr> <Td> 1944 - 12 - 31 </Td> <Td> Hungary </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> Hungary switched sides </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 02 </Td> <Td> Ecuador </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Ecuadorian declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 07 </Td> <Td> Argentina Paraguay </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> <P> Argentinean declaration </P> <P> Paraguayan declaration </P> </Td> </Tr> <Tr> <Td> 1942 - 02 - 12 </Td> <Td> Peru </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 15 </Td> <Td> Venezuela Uruguay </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> <P> Venezuelan declaration </P> <P> Uruguayan declaration </P> </Td> </Tr> <Tr> <Td> 1945 - 02 - 21 </Td> <Td> San Marino </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 23 </Td> <Td> Turkey </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 24 </Td> <Td> Egypt </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 02 - 26 </Td> <Td> Syria Lebanon </Td> <Td> Nazi Germany Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 04 - 01 </Td> <Td> Saudi Arabia </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 04 - 03 </Td> <Td> Finland </Td> <Td> Nazi Germany </Td> <Td> </Td> <Td> Finland switched sides </Td> <Td> Lapland War </Td> </Tr> <Tr> <Td> 1945 - 04 - 11 </Td> <Td> Chile </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 07 - 06 </Td> <Td> Brazil </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 07 - 14 </Td> <Td> Italy </Td> <Td> Japan </Td> <Td> </Td> <Td> </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 08 - 08 </Td> <Td> Soviet Union </Td> <Td> Japan </Td> <Td> </Td> <Td> Last outbreak of war during the entire Second World War . </Td> <Td> Declaration </Td> </Tr> <Tr> <Td> 1945 - 08 - 10 </Td> <Td> Mongolia </Td> <Td> Japan </Td> <Td> </Td> <Td> W (de jure) A (de facto 1945 - 08 - 09) War declared 24 hours after crossing the border with Soviet troops </Td> <Td> <P> Soviet Invasion of Manchuria Mongolia in World War II </P> </Td> </Tr> </Table> <Tr> <Th> Date </Th> <Th> Initiator Nation (s) </Th> <Th> Targeted Nation (s) </Th> <Th> Declaration of War: Type </Th> <Th> Notes / Comments </Th> <Th> Document / Event </Th> </Tr>

When did germany declare war on belgium ww2