Battle of Hamburger Hill "chewed up like a hamburger" in grim reference to the Battle of Pork Chop Hill during the Korean War. The battle on Hamburger Hill occurred in May 1969, during Operation Apache Snow, the second part of a three-phased campaign intended to destroy PAVN Base Areas in the remote A Sầu Valley. This campaign was a series of operations intended to do damage to the PAVN forces in the A Sầu Valley, which had been an infiltration route into South Vietnam prior to 1966, when the PAVN seized the Special Forces camp in the valley during the Battle of A Shau
History of the hamburger in the United States Seymour Community Historical Society of Seymour, Wisconsin, credits Charlie Nagreen, now known as "Hamburger Charlie", with the invention of the hamburger. Nagreen was 15 when he reportedly made sandwiches out of meatballs that he was selling at the 1885 Seymour Fair (now the Outagamie County Fair) to make it easier for customers to eat while walking. The Historical Society explains that Nagreen named the hamburger after the Hamburg steak, with which local German immigrants were familiar. There is good evidence that the first hamburger served on a bun was made by Oscar Bilby of Tulsa, Oklahoma, in 1891. In April