Operation Mastiff

Operation Mastiff
Part of the Vietnam War
Date21–25 February 1966
Location11°07′44″N 106°18′29″E / 11.129°N 106.308°E / 11.129; 106.308
Result Inconclusive
Belligerents
 United States North Vietnam
Commanders and leaders
Major Gen Jonathan O. Seaman
Units involved
1st Infantry Division 9th Division
Casualties and losses
17 killed US body count: 61 killed

Operation Mastiff was an operation conducted by the U.S. 1st Infantry Division in the Dầu Tiếng District, lasting from 21 to 25 February 1966.