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Following the departure of the U.S. forces in 1972, Củ Chi became the base of the ARVN 25th Division. [1]As the People's Army of Vietnam (PAVN) forces closed in on Saigon in late April 1975, the camp was hit by PAVN artillery fire on 28 April and besieged the PAVN. 25th Division commander Major general Lý Tòng Bá ordered his forces to fight in place, but on the morning of 29 April after ...
During the Vietnam War from 1967, Củ Chi Base Camp served as base for the 269th Aviation Battalion of the United States Army. It is famous for its Củ Chi tunnels, which were constructed during the Vietnam War, and served as headquarters for the Viet Cong. Today, the district has many industrial zones. As of 2010, the district had a ...
Entrance sign at the tunnels. Part of the tunnel complex at Củ Chu, this tunnel has been made wider and taller to accommodate tourists. The tunnels of Củ Chi (Vietnamese: Địa đạo Củ Chi) are an immense network of connecting tunnels located in the Củ Chi District of Ho Chi Minh City (Saigon), Vietnam, and are part of a much larger network of tunnels that underlie much of the country.
Cambrian Stage 3 is the still unnamed third stage of the Cambrian. It succeeds Cambrian Stage 2 and precedes Cambrian Stage 4, although neither its base nor top have been formally defined. The plan is for its lower boundary to correspond approximately to the first appearance of trilobites, about 521 million years ago, [2] though the globally ...
The Cambrian explosion (also known as Cambrian radiation [1] or Cambrian diversification) is an interval of time approximately in the Cambrian period of the early Paleozoic when a sudden radiation of complex life occurred, and practically all major animal phyla started appearing in the fossil record.
The Precambrian-Cambrian boundary lies 2.4 m above the base of the second member, which is the lowest occurrence of Treptichnus pedum. The traces can be seen on the lower surface of the sandstone layers. The first calcareous shelled skeletal fossils (Ladatheca cylindrica) are 400 m above the boundary.
Cambrian Stage 2. Stage 2 of the Cambrian is the unnamed upper stage of the Terreneuvian Series. It lies atop the Fortunian and below Stage 3 of the Cambrian. It is commonly referred to as the Tommotian, after the Cambrian stratigraphy of Siberia. [ 2][ 3] Neither the upper nor lower boundary has yet been defined by the International Commission ...
Vietnam War. During the Vietnam War, "tunnel rat" became an unofficial specialty for volunteer combat engineers [1] and infantrymen from the Australian Army and the U.S. Army who cleared and destroyed enemy tunnel complexes. Their motto was the tongue-in-cheek Latin phrase Non Gratum Anus Rodentum ("not worth a rat's ass").