Top photo from 12th Mar ComdC, Jan69; bottom photo courtesy of Ron Asher
Combat Base Area C-4 appears in the top photo, while
the bottom picture displays a typical bunker at C-4 in January 1968.
The 1st Amphibian Tractor Battalion in Operation Napoleon had the main
responsibility for the construction of C-4 as well as the protection
of the Cua Viet sector.