4 December 1967 – On this day during the Vietnam War: U.S. and South Vietnamese forces engage Viet Cong troops in the Mekong Delta. (1)
- https://www.youtube.com/watch?v=69nxwf1s7Tw&lc=z223xp2ybzj2zfvws04t1aokgti0lg43uezcimvwos4kbk0h00410
(1) Wikipedia