British children of the time were playing marbles and hidding in air raid shelters.But for youngsters under the Third Reich, this board game was invented to teach them the tactics of warfare - against a British foe.The war time amusement, Adlers Luftverteidigungs spiel, which translates as the Eagle Air Defence Game, involves two or more players attacking enemy positions on a geographically illustrated board while defending friendly territory-----Specifically designed in 1941 to prepare young members of the Hitler Youth 'for an attack on the Fatherland', the box illustration shows a British plane being shot down by a German gunner - indicating exactly where the manufacturers thought such an attack might come from.------------It was designed to be played by over-12s - all of whom were compulsory members of the Hitler Youth - either two individuals, or two teams from the 150-strong 'Gefolgschaft' groups which met every week.Children aged 10 to 14 were all members of the Deutsches Jungvolk division of the Hitler Youth