Special forces emerged in the early 20th century, with a significant growth in the field during the Second World War, when every major army involved in the fighting created formations devoted to special operations behind enemy lines.
11 photos: John Kasich's political career. Ohio Gov. John Kasich speaks at the First in the Nation Republican Leadership Summit on April 18, 2015, in Nashua, New Hampshire. The summit was attended by all the 2016 Republican candidates as well as those eying a run for the nomination.
Karen & John Kasich Have Been Married for 18 Years. John Kasich and wife Karen enter a town hall at The Derryfield on February 8, 2016, in Manchester, New Hampshire. Karen Waldbillig married John Kasich in 1997, according to her biography on the Ohio state website.