This World War II naval "What If?" scenario was run twice at Drums III, using Shipbase III computer monitored software system. It was an engagement between the Japanese strike force from the Pearl harbor attack and a force of cruisers & destroyers (1 CA, 3 CL, 9 DD) that were available after the attack. The engagement takes place on the night of Dec. 9-10,1941, in heavy seas. With three random possible initial deployments, both games were run with the same setup. The American force is traveling due North at 18 knots and closing on the Japanese that are traveling Northwest at 12 knots.

On Friday the Japanese moved the carriers away to the right (NNW) at the first sighting. All of the other units closed on the Americans as quickly as possible and without formation, the exception being the two battleships that formed a line with two destroyers out front. Units entered the fight piecemeal with the American doing better due to their more compact formation. The engagement lasted about 12 turns, with both sides taking heavy losses due to the close ranges at night. The Japanese lost all three cruisers and six of nine destroyers, with one additional DD heavily damaged and one battleship having medium damage due to a torpedo hit. The Americans lost the heavy cruisers and all the destroyers. The three light cruisers all had medium damage. The tonnage lost ratio was 4 to 3 in favor of the Americans.

Saturday's game began the same as Friday's, up to the first firing round. The Americans hit the magazine of a Japanese destroyer. The illumination made two more destroyers and the light cruiser visible for all four of the American cruisers and half of the destroyers. The three ships were quickly sunk. The Japanese heavy cruisers closed on the Americans in column, as did the battleships. When the first Japanese CA got in range, it was set afire by gunnery. This made it and the second CA visible to all of the American ships.

Two turns later, both of the heavy cruisers were sunk. On the 8th turn, an American destroyers magazine was hit and a Japanese destroyer was set afire. This made the St. Louis and one of the battleships visible. All fire was concentrated on the illuminated ships in the following two turns, including the carriers that were close enough. At this point, the Americans were not going to push their luck and withdrewrinto the night. Due to the explosions and fires, the games turned out much better for the Americans. The same Japanese ships were sunk, with a BB & two DD having heavy damage. The Americans lost only seven DD. The St. Louis and one DD had heavy damage and the other DD had medium. The tonnage lost ratio was 3 to 1 in favor of the Americans.