<Tr> <Th_colspan="2"> World War I </Th> </Tr> <Tr> <Td_colspan="2"> Clockwise from the top: The aftermath of shelling during the Battle of the Somme, Mark V tanks cross the Hindenburg Line, HMS Irresistible sinks after hitting a mine in the Dardanelles, a British Vickers machine gun crew wears gas masks during the Battle of the Somme, Albatros D. III fighters of Jagdstaffel 11 </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> Date </Th> <Td> 28 July 1914--11 November 1918 (1914 - 07 - 28--1918 - 11 - 11) (4 years, 3 months and 2 weeks) Peace treaties (show) <Ul> <Li> Treaty of Versailles Signed 28 June 1919 (4 years and 11 months) </Li> <Li> Treaty of Saint - Germain - en - Laye Signed 10 September 1919 (5 years, 1 month, 1 week and 6 days) </Li> <Li> Treaty of Neuilly - sur - Seine Signed 27 November 1919 (4 years, 1 month, 1 week and 6 days) </Li> <Li> Treaty of Trianon Signed 4 June 1920 (5 years, 10 months and 1 week) </Li> <Li> Treaty of Sèvres Signed 10 August 1920 (6 years, 1 week and 6 days) </Li> <Li> United States--Austria Peace Treaty Signed 24 August 1921 (3 years, 8 months, 2 weeks and 3 days) </Li> <Li> United States--Germany Peace Treaty Signed 25 August 1921 (4 years, 4 months, 2 weeks and 5 days) </Li> <Li> United States--Hungary Peace Treaty Signed 29 August 1921 (3 years, 8 months, 3 weeks and 1 day) </Li> <Li> Treaty of Lausanne Signed 24 July 1923 (8 years, 8 months, 3 weeks and 4 days) </Li> </Ul> </Td> </Tr> <Tr> <Th> Location </Th> <Td> Europe, Africa, the Middle East, the Pacific Islands, China, Indian Ocean, and off the coast of South and North America </Td> </Tr> <Tr> <Th> Result </Th> <Td> <P> Allied victory </P> <Ul> <Li> Central Powers' victory on the Eastern Front nullified by defeat on the Western Front </Li> <Li> Fall of the German, Russian, Ottoman, and Austro - Hungarian empires </Li> <Li> Russian Civil War and foundation of the Soviet Union </Li> <Li> Formation of new countries in Europe and the Middle East </Li> <Li> Transfer of German colonies and regions of the former Ottoman Empire to other powers </Li> <Li> Establishment of the League of Nations . (more ...) </Li> </Ul> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Th> Date </Th> <Td> 28 July 1914--11 November 1918 (1914 - 07 - 28--1918 - 11 - 11) (4 years, 3 months and 2 weeks) Peace treaties (show) <Ul> <Li> Treaty of Versailles Signed 28 June 1919 (4 years and 11 months) </Li> <Li> Treaty of Saint - Germain - en - Laye Signed 10 September 1919 (5 years, 1 month, 1 week and 6 days) </Li> <Li> Treaty of Neuilly - sur - Seine Signed 27 November 1919 (4 years, 1 month, 1 week and 6 days) </Li> <Li> Treaty of Trianon Signed 4 June 1920 (5 years, 10 months and 1 week) </Li> <Li> Treaty of Sèvres Signed 10 August 1920 (6 years, 1 week and 6 days) </Li> <Li> United States--Austria Peace Treaty Signed 24 August 1921 (3 years, 8 months, 2 weeks and 3 days) </Li> <Li> United States--Germany Peace Treaty Signed 25 August 1921 (4 years, 4 months, 2 weeks and 5 days) </Li> <Li> United States--Hungary Peace Treaty Signed 29 August 1921 (3 years, 8 months, 3 weeks and 1 day) </Li> <Li> Treaty of Lausanne Signed 24 July 1923 (8 years, 8 months, 3 weeks and 4 days) </Li> </Ul> </Td> </Tr> <Tr> <Th> Location </Th> <Td> Europe, Africa, the Middle East, the Pacific Islands, China, Indian Ocean, and off the coast of South and North America </Td> </Tr> <Tr> <Th> Result </Th> <Td> <P> Allied victory </P> <Ul> <Li> Central Powers' victory on the Eastern Front nullified by defeat on the Western Front </Li> <Li> Fall of the German, Russian, Ottoman, and Austro - Hungarian empires </Li> <Li> Russian Civil War and foundation of the Soviet Union </Li> <Li> Formation of new countries in Europe and the Middle East </Li> <Li> Transfer of German colonies and regions of the former Ottoman Empire to other powers </Li> <Li> Establishment of the League of Nations . (more ...) </Li> </Ul> </Td> </Tr> </Table>

When was first world war started and ended