“As the Battle of Britain began to take hold in 1940, a bomb fell on an outbuilding belonging to Richmond Golf Club in Surrey, England. As a result, the club — rather than halt future rounds of golf — issued an incredible list of temporary golf rules to all members that took into account the potentially life-threatening conditions on the course.”
My particular favourites:
2. In competitions, during gunfire, or while bombs are falling, players may take cover without penalty for ceasing play.
3. The positions of known delayed-action bombs are marked by red flags placed at reasonably, but not guaranteed safe distance therefrom.
5. A ball moved by enemy action may be replaced, or if lost or destroyed, a ball may be dropped not nearer the hole without penalty.