Summary:"A troop of Americans are trapped behind enemy lines. Not only are their German enemies firing at them but so are their own side. Somehow they have to get a message to their comrades. The only way is by pigeon. But every time a pigeon rises in the air it is shot down. The last pigeon, a black bird called Cher Ami, flies with bullets zipping through the air all around him, covering 25 miles in just 65 minutes, helping to save the lives of the 194 survivors"--Publisher's website