The Combat Box was a tactical formation used by heavy (strategic) bombers of the U.S. Army Air Forces during World War II. The combat box was also referred to as a "staggered formation". Its defensive purpose was in massing the firepower of the bombers' guns, while offensively it concentrated the release of bombs on a target.
The Combat Box was a tactical formation used by heavy (strategic) bombers of the U.S. Army Air Forces during World War I and II.
it should be marked neither because it is not known if it was used in other wars or not but adding another war made the AI mark it as incorrect.