This picture is a dramatic representation of soldiers being used as chess pieces, putting their lives in danger for the personal gain of others in control.
The words making up the chess piece is a statement made by Winston Churchill in 1940, when it seemed as if Britain would soon be wiped out by Hitler's army. It was his call-to-arms to protect their country.
Interpret it how you will, and please feel free to voice your opinions about how you feel. I also know that it's a very touchy subject to some, but it's just a piece of art, and in no way am I trying to belittle anyones beliefs or offend anyone.