"Battery 245, two 6-inch guns on shielded barbette carriages, built in World War II. The battery's ammunition and fire control bunker is behind the gun. Beginning with the Civil War, the U.S. Army recognized a need to provide for coastal defenses in the Pacific NW along the Columbia River and in the Puget Sound. A number of forts, many no longer in service, were built for this purpose."
The last battery to be emplaced, Battery 245 featured the modern “200 series” of gun batteries that used radar to improve accuracy in foul weather and fog. These new guns could fire 9 to 15 miles away. Battery 245 came into service in December 1944, just as the outmoded Battery Russell fired its last round.