As de Guingand said to Clarke: "Well there it is. You must conceal 150,000 men with a thousand guns on a plain as flat and as hard as a billiard table, and the Germans must not know anything about it, although they will be watching very movement, listening for every noise, charting every track. Every bloody wog will be watching you and telling the Germans what you are doing for the price of a packet of tea. You can't do it, of course, but you've bloody well got to!"