Unfriendly Friendly is a term used mainly in military forces, especially cadet or training corps to denote forces who are acting as an opposing force, but played by friendly forces. The term is used mainly because many policies in cadet forces command that the cadets and some organisations do not have enemies or unfriendly forces to fight them, and thus doctrine also says that on official documents or radio transmissions that they are referred to as 'unfriendly friendlies'.