<Tr> <Td> Six Days' Campaign </Td> <Td> #1814 </Td> <Td> War of the Sixth Coalition </Td> <Td> 0,080,000 80,000 </Td> </Tr> <Tr> <Td> Peninsula Campaign </Td> <Td> #1862 </Td> <Td> American Civil War </Td> <Td> 0,036,463 36,463 </Td> </Tr> <Tr> <Td> Battle of Chancellorsville </Td> <Td> #1863 </Td> <Td> American Civil War </Td> <Td> 0,030,000 30,000--30,500 </Td> </Tr> <Tr> <Td> Overland Campaign </Td> <Td> #1864 </Td> <Td> American Civil War </Td> <Td> 0,087,000 87,000--92,000 </Td> </Tr>

List of battles with most british military fatalities