A decoy inside war can e.g. become the wooden fake tank, designed to be mistaken by bomber plane crews to be rattling, or even the device that fools an automatic rules like the guided missile, by simulating some physical properties of the rattling target.

For the defence system, decoys and chaff for ICBMs would mainly operate around midcourse: when you took a boost phase it would exist as in a rocket, because separate rockets for each of several decoys would non become practical, when at reentry light decoys and chaff well slow down and/or come destroyed in the atmosphere.

The decoy was originally the little pool sustaining an extended cone-conical wickerwork tunnel, used to catch untamed ducks. When a ducks settled, a little trained pooch would lead a ducks into the burrow. A catch was at one time sent to market for food, however currently which are actually merely wont to catch ducks to become ringed and freed: look at ornithology. A word come from either Dutch eende kooi = "duck cage".