In military terms, a "klick" is a term used to denote a distance of one kilometer or 1,000 meters, 0.6214 miles or 3,280.84 feet. It is a unit of distance used for ground infantry, regardless of whether it is allied or hostile. Military forces refer to it in both traveled and target distance from any point of interest. For example, a klick in dialogue is when we have walked 15 clicks or the enemy unit is five clicks North. The term "klick" is believed to have originated in World War 1 or the Vietnam War, but nobody knows the true origin of the term.