Found this on another site,about genuine rules that were brought in during WW2 for British Golfers. 1) During gunfire or while bombs are falling,players may take cover without penalty for slow play. 2) Players should pick up bomb or shell splinters rom the fairways to prevent them damaging the mowers. 3)The position of known delayed action bombs is marked by flags at a resonable distance but is not guaranteed safe distance. 4)Bomb splinters and shrapnel can be moved from greens or elsewhere when within one club length. No penalty. 5)A ball moved by enemy action can be replaced at its original position. No penalty if a ball is lost or destroyed, a free drop is allowed. 6)A free drop is allowed for any ball resting in a bomb crater. 7) A player whose stroke is affected by the noise of a bomb or by machinegun fire, may replay the shot under penalty of one stroke.