<Table> <Tr> <Th> Battle , Siege , or Offensive </Th> <Th> Conflict </Th> <Th> Date </Th> <Th> Estimated Number killed </Th> <Th> References </Th> </Tr> <Tr> <Td> Battle of Normandy / Northern France </Td> <Td> World War II </Td> <Td> 1944 -- 06 - 06 ! June 6 to September 14 , 1944 </Td> <Td> 34,137 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Meuse - Argonne Offensive </Td> <Td> World War I </Td> <Td> 1918 -- 09 - 26 ! September 26 to November 11 , 1918 </Td> <Td> 26377 ! 26,277 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Okinawa </Td> <Td> World War II </Td> <Td> 1945 -- 04 - 01 ! April 1 to June 21 , 1945 </Td> <Td> 20195 ! 20,195 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of the Bulge </Td> <Td> World War II </Td> <Td> 1944 -- 12 - 16 ! December 16 , 1944 , to January 25 , 1945 </Td> <Td> 19276 ! 19,276 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Hürtgen Forest </Td> <Td> World War II </Td> <Td> 1944 -- 09 - 19 ! September 19 , 1944 , to February 10 , 1945 </Td> <Td> Over 12,000 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Luzon </Td> <Td> World War II </Td> <Td> 1945 -- 01 - 09 ! January 9 to August 15 , 1945 </Td> <Td> 10640 ! 10,640 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Guadalcanal </Td> <Td> World War II </Td> <Td> 1942 -- 08 - 07 ! August 7 , 1942 , to February 9 , 1943 </Td> <Td> 7100 ! 7,100 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Gettysburg </Td> <Td> American Civil War </Td> <Td> 1863 -- 07 - 06 ! July 1 to July 3 , 1863 </Td> <Td> 7,058 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Operation Nordwind </Td> <Td> World War II </Td> <Td> 1944 -- 12 - 31 ! December 31 , 1944 , to January 25 , 1945 </Td> <Td> 7,000 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Iwo Jima </Td> <Td> World War II </Td> <Td> 1945 -- 02 - 16 ! February 16 to March 26 , 1945 </Td> <Td> 6,821 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Lorraine Campaign </Td> <Td> World War II </Td> <Td> 1944 -- 09 - 01 ! September 1 to December 18 , 1944 </Td> <Td> 6,657 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Anzio </Td> <Td> World War II </Td> <Td> 1944 -- 01 - 22 ! January 22 to June 5 , 1944 </Td> <Td> 5,538 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Seven Days Battles </Td> <Td> American Civil War </Td> <Td> 1862 -- 06 - 25 ! June 25 to July 1 , 1862 </Td> <Td> 5,228 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Pusan Perimeter </Td> <Td> Korean War </Td> <Td> 1950 -- 08 - 04 ! August 4 to September 18 , 1950 </Td> <Td> 4,599 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Chinese Second Phase Offensive in North Korea </Td> <Td> Korean War </Td> <Td> 1950 -- 11 - 25 ! November 25 to December 15 , 1950 </Td> <Td> 4,538 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Spotsylvania </Td> <Td> American Civil War </Td> <Td> 1864 -- 05 - 08 ! May 8 to May 21 , 1864 </Td> <Td> 4,240 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Chickamauga </Td> <Td> American Civil War </Td> <Td> 1863 -- 09 - 19 ! September 19 to September 20 , 1863 </Td> <Td> 3,968 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of the Wilderness </Td> <Td> American Civil War </Td> <Td> 1864 -- 05 - 05 ! May 5 to May 7 , 1864 </Td> <Td> 3,741 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Antietam </Td> <Td> American Civil War </Td> <Td> 1862 -- 09 - 17 ! September 17 , 1862 </Td> <Td> 3,654 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Leyte </Td> <Td> World War II </Td> <Td> 1944 -- 10 - 17 ! October 17 - December 26 , 1944 </Td> <Td> 3,593 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Operation Diadem </Td> <Td> World War II </Td> <Td> 1944 -- 05 - 11 ! May 11 -- 18 , 1944 </Td> <Td> 3,145 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Leyte Gulf </Td> <Td> World War II </Td> <Td> 1944 -- 10 - 23 ! October 23 -- 25 , 1944 </Td> <Td> 2,800 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Shiloh </Td> <Td> American Civil War </Td> <Td> 1862 -- 04 - 06 ! April 6 to April
<Table> <Tr> <Th> Battle , Siege , or Offensive </Th> <Th> Conflict </Th> <Th> Date </Th> <Th> Estimated Number killed </Th> <Th> References </Th> </Tr> <Tr> <Td> Battle of Normandy / Northern France </Td> <Td> World War II </Td> <Td> 1944 -- 06 - 06 ! June 6 to September 14 , 1944 </Td> <Td> 34,137 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Meuse - Argonne Offensive </Td> <Td> World War I </Td> <Td> 1918 -- 09 - 26 ! September 26 to November 11 , 1918 </Td> <Td> 26377 ! 26,277 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Okinawa </Td> <Td> World War II </Td> <Td> 1945 -- 04 - 01 ! April 1 to June 21 , 1945 </Td> <Td> 20195 ! 20,195 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of the Bulge </Td> <Td> World War II </Td> <Td> 1944 -- 12 - 16 ! December 16 , 1944 , to January 25 , 1945 </Td> <Td> 19276 ! 19,276 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Hürtgen Forest </Td> <Td> World War II </Td> <Td> 1944 -- 09 - 19 ! September 19 , 1944 , to February 10 , 1945 </Td> <Td> Over 12,000 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Luzon </Td> <Td> World War II </Td> <Td> 1945 -- 01 - 09 ! January 9 to August 15 , 1945 </Td> <Td> 10640 ! 10,640 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Guadalcanal </Td> <Td> World War II </Td> <Td> 1942 -- 08 - 07 ! August 7 , 1942 , to February 9 , 1943 </Td> <Td> 7100 ! 7,100 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Gettysburg </Td> <Td> American Civil War </Td> <Td> 1863 -- 07 - 06 ! July 1 to July 3 , 1863 </Td> <Td> 7,058 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Operation Nordwind </Td> <Td> World War II </Td> <Td> 1944 -- 12 - 31 ! December 31 , 1944 , to January 25 , 1945 </Td> <Td> 7,000 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Iwo Jima </Td> <Td> World War II </Td> <Td> 1945 -- 02 - 16 ! February 16 to March 26 , 1945 </Td> <Td> 6,821 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Lorraine Campaign </Td> <Td> World War II </Td> <Td> 1944 -- 09 - 01 ! September 1 to December 18 , 1944 </Td> <Td> 6,657 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Anzio </Td> <Td> World War II </Td> <Td> 1944 -- 01 - 22 ! January 22 to June 5 , 1944 </Td> <Td> 5,538 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Seven Days Battles </Td> <Td> American Civil War </Td> <Td> 1862 -- 06 - 25 ! June 25 to July 1 , 1862 </Td> <Td> 5,228 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Pusan Perimeter </Td> <Td> Korean War </Td> <Td> 1950 -- 08 - 04 ! August 4 to September 18 , 1950 </Td> <Td> 4,599 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Chinese Second Phase Offensive in North Korea </Td> <Td> Korean War </Td> <Td> 1950 -- 11 - 25 ! November 25 to December 15 , 1950 </Td> <Td> 4,538 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Spotsylvania </Td> <Td> American Civil War </Td> <Td> 1864 -- 05 - 08 ! May 8 to May 21 , 1864 </Td> <Td> 4,240 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Chickamauga </Td> <Td> American Civil War </Td> <Td> 1863 -- 09 - 19 ! September 19 to September 20 , 1863 </Td> <Td> 3,968 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of the Wilderness </Td> <Td> American Civil War </Td> <Td> 1864 -- 05 - 05 ! May 5 to May 7 , 1864 </Td> <Td> 3,741 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Antietam </Td> <Td> American Civil War </Td> <Td> 1862 -- 09 - 17 ! September 17 , 1862 </Td> <Td> 3,654 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Leyte </Td> <Td> World War II </Td> <Td> 1944 -- 10 - 17 ! October 17 - December 26 , 1944 </Td> <Td> 3,593 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Operation Diadem </Td> <Td> World War II </Td> <Td> 1944 -- 05 - 11 ! May 11 -- 18 , 1944 </Td> <Td> 3,145 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Leyte Gulf </Td> <Td> World War II </Td> <Td> 1944 -- 10 - 23 ! October 23 -- 25 , 1944 </Td> <Td> 2,800 killed </Td> <Td> </Td> </Tr> <Tr> <Td> Battle of Shiloh </Td> <Td> American Civil War </Td> <Td> 1862 -- 04 - 06 ! April 6 to April
which battle lost the most soldiers in ww2
which battle lost the most soldiers in ww2
Battle of Normandy / Northern France
Battle of Normandy / Northern France