U.S. 25th Infantry Division M-48 Patton tanks from 1st Battalion, 69th Armor in a herringbone formation on a road in Vietnam, west of Pleiku, April 1, 1966.
Unknown author<span style="display: none;">Unknown author</span>
1966-04-01
<a rel="nofollow" class="external text" href="https://history.army.mil/html/books/090/90-21/CMH_Pub_90-21-1.pdf"><i>Vietnam Studies: Tactical and Materiel Innovations</i>, p 129</a>