<Table> <Tr> <Th_colspan="2"> Russo - Japanese War </Th> </Tr> <Tr> <Td_colspan="2"> Clockwise from top: Russian cruiser Pallada under fire at Port Arthur, Russian cavalry at Mukden, Russian cruiser Varyag and gunboat Korietz at Chemulpo Bay, Japanese dead at Port Arthur, Japanese infantry crossing the Yalu River </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> Date </Th> <Td> 8 February 1904--5 September 1905 (1 year, 6 months and 4 weeks) </Td> </Tr> <Tr> <Th> Location </Th> <Td> Manchuria, Yellow Sea, Korean Peninsula, Sea of Japan </Td> </Tr> <Tr> <Th> Result </Th> <Td> Japanese victory; Treaty of Portsmouth </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th_colspan="2"> Belligerents </Th> </Tr> <Tr> <Td> <Ul> <Li> Empire of Japan </Li> </Ul> </Td> <Td> <Ul> <Li> Russian Empire </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Commanders and leaders </Th> </Tr> <Tr> <Td> <Ul> <Li> Meiji </Li> <Li> Ōyama Iwao </Li> <Li> Kodama Gentarō </Li> <Li> Nogi Maresuke </Li> <Li> Kuroki Tamemoto </Li> <Li> Tōgō Heihachirō </Li> </Ul> </Td> <Td> <Ul> <Li> Nicholas II </Li> <Li> Aleksey Kuropatkin </Li> <Li> Yevgeni Alekseyev </Li> <Li> Zinovy Rozhestvensky </Li> <Li> Stepan Makarov † </Li> <Li> Wilgelm Vitgeft † </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Strength </Th> </Tr> <Tr> <Td> <P> 1,200,000 (total) </P> <Ul> <Li> 650,000 (peak) </Li> </Ul> </Td> <Td> <P> 1,365,000 (total) </P> <Ul> <Li> 700,000 (peak) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Casualties and losses </Th> </Tr> <Tr> <Td> <Ul> <Li> 47,152--47,400 killed </Li> <Li> 11,424--11,500 died of wounds </Li> <Li> 21,802--27,200 died of disease </Li> </Ul> <P> Total: 58,000--86,100 </P> </Td> <Td> <Ul> <Li> 34,000--52,623 killed or died of wounds </Li> <Li> 9,300--18,830 died of disease </Li> <Li> 146,032 wounded </Li> <Li> 74,369 captured </Li> </Ul> <P> Total: 43,300--120,000 </P> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Russo - Japanese War </Th> </Tr>

When did japan go to war with russia