Wellington talking to Ponsonby about the 'ground' ie Waterloo which he'd discovered a year before and kept 'in his pocket' ever since - just in case he needed to stand between the French and Brussels
OK easy one for you all
"Now watch this drive"!
ken - unfortunately i've never seen waterloo, i only got the first one because i could only think of two films involving the prussians, waterloo and barry lyndon, so i went for the most obvious first