List of battles with most United States military fatalities

Columns: Campaign | Conflict | Date | Estimated number killed | Opposing force
Battle of Anzio | World War II | January 22 to June 5 , 1944 | 5,538 killed | Germany | Battle of Pusan Perimeter | Korean War | August 4 to September 18 , 1950 | 4,599 killed | North Korea | Chinese Second Phase Offensive in North Korea | Korean War | November 25 to December 15 , 1950 | 4,538 killed | China | Battle of Leyte | World War II | October 17 to December 26 , 1944 | 3,593 killed | Japan | Battle of Saipan | World War II | June 15 to July 9 , 1944 | 3,426 killed | Japan | Tet Offensive | Vietnam War | January 30 to September 23 , 1968 | 3,178 Killed | North Vietnam

Example questions:
How many Germans were killed in the battle where 26,277 of the United States military were killed ? | What holiday did the battle which took place from January 30 to September 23 , 1968 begin on ? | How many Japanese were taken prisoner in the battle which took place from February 19 to March 26 , 1945 ? | What were the codenamed landing sites of the Americans at the battle where 29,204 of the United States military were killed ? | How many approximate casualties were sustained by both sides in the battle which took place from April 1 to June 22 , 1945 ?

Answers:
28,000 | Vietnamese New Year | 216 | Utah and Omaha | 160,000