Battle
|
Conflict
|
Date
|
Fatalities
|
Opposing Force
|
Battle of Elsenborn Ridge
|
World War II
|
December 16 to 26, 1944
|
~5,000 killed
|
Nazi Germany
|
Battle of Saint-Mihiel
|
World War I
|
September 12 to 15, 1918
|
~4,500 killed
|
German Empire
|
Battle of Gettysburg
|
American Civil War
|
July 1 to July 3, 1863
|
3,155 killed
|
Confederate States of America
|
Battle of Leyte Gulf
|
World War II
|
October 23 to 25, 1944
|
2,800 killed
|
Empire of Japan
|
Battle of Spotsylvania
|
American Civil War
|
May 8 to May 21, 1864
|
2,725 killed
|
Confederate States of America
|
D-Day
|
World War II
|
June 6, 1944
|
2,500 killed
|
Nazi Germany
|
Pearl Harbor
|
World War II
|
December 7, 1941
|
2,335 killed
|
Empire of Japan
|
Battle of the Wilderness
|
American Civil War
|
May 5 to May 7, 1864
|
2,246 killed
|
Confederate States of America
|
Operation Thunderbolt
|
Korean War
|
January 25 to February 20, 1951
|
2,228 killed
|
China/North Korea
|
Battle of Antietam
|
American Civil War
|
September 17, 1862
|
2,108 killed
|
Confederate States of America
|
Battle of Aachen
|
World War II
|
October 12 to October 21, 1944
|
2,000 killed
|
Nazi Germany
|
Battle of Cold Harbor
|
American Civil War
|
May 21 to June 12, 1864
|
1,844 killed
|
Confederate States of America
|
Battle of Tarawa
|
World War II
|
November 20 to November 23, 1943
|
1,759 killed
|
Empire of Japan
|
Battle of Shiloh
|
American Civil War
|
April 6 to April 7, 1862
|
1,754 killed
|
Confederate States of America
|
Second Battle of Bull Run
|
American Civil War
|
August 26 to August 30, 1862
|
1,747 killed
|
Confederate States of America
|
|
Battle
|
Conflict
|
Date
|
Fatalities
|
Opposing Force
|
Seven Days Battles
|
American Civil War
|
June 25 to July 1, 1862
|
1,734 killed
|
Confederate States of America
|
UN Invasion of North Korea
|
Korean War
|
September 30 to November 25, 1950
|
1,732 killed
|
North Korea / China
|
Naval Battle of Guadalcanal
|
World War II
|
November 12, 1942 to November 15, 1942
|
1,732 killed
|
Empire of Japan
|
Battle of Stones River
|
American Civil War
|
December 31, 1862 to January 2, 1863
|
1,730 killed
|
Confederate States of America
|
Battle of Chickamauga
|
American Civil War
|
September 19 to September 20, 1863
|
1,656 killed
|
Confederate States of America
|
Battle of Chancellorsville
|
American Civil War
|
April 30 to May 6, 1863
|
1,606 killed
|
Confederate States of America
|
UN Counteroffensive from the Pusan Perimeter
|
Korean War
|
September 15 to September 30, 1950
|
1,492 killed
|
North Korea
|
Task Force Faith
|
Korean War
|
November 27 to December 2, 1950
|
1,450~ killed
|
China
|
Second Battle of Naktong Bulge
|
Korean War
|
September 1 to September 15, 1950
|
1,305 killed
|
North Korea
|
Battle of Fredericksburg
|
American Civil War
|
December 11 to December 15, 1862
|
1,284 killed
|
Confederate States of America
|
Battle of Taejon
|
Korean War
|
July 14 to July 21, 1950
|
1,128 killed
|
North Korea
|
Battle of Savo Island
|
World War II
|
August 8, 1942 to August 9, 1942
|
1,077 killed
|
Empire of Japan
|
Battle of Belleau Wood
|
World War I
|
June 1 to June 26, 1918
|
1,062 killed
|
German Empire
|
Battle of Masan
|
Korean War
|
August 5 to September 19, 1950
|
1,057 killed
|
North Korea
|
Battle of Manila
|
World War II
|
February 3 to March 3, 1945
|
1,010 killed
|
Empire of Japan
|
|