The December, 1932 issue of Modern Mechanix magazine showed kids how to Fight Artillery Duels in Fascinating War Games — if they assembled all the extremely complex components:
The “explosive” targets, which fly to pieces when hit, are shown in Figs. 4 and 7, and the photographs. The construction can be easily understood from the photo, Fig. 3. They “explode” when a shot strikes from above and causes them to bend down slightly at the canvas hinge. The rubber band snaps the two sides up into a “V” shape throwing the turrets, fort, cannon, etc., into the air.The sensitivity of the exploding mechanism may be adjusted by changing the angle which the two sides make at the hinge. Leather, cloth or canvas may be used for the hinge. The bottoms of the battleships are smoothed so they may be pulled over the carpet or floor if desired by the small clock works tractor to be described below. The parts of the ship and fort are not fastened together except where indicated, in order that they may fly to pieces when struck by a shell.