Battery Grubbs is a ruin in Corregidor Island. Work on this $212,397 battery started from November 1907 and it saw completion early in 1909. It was named in honor of 1st Lieutenant Hayden Y. Grubbs who belonged to the 6th U.S. Infantry and who died during the insurrection in the islands in 1899. Battery Grubbs was armed with two 10-inch guns mounted on disappearing carriages and located well inland in the west central part of Corregidor. This gun emplacement was intended to fire to the northwest. At the start of the Second World War the battery was not originally manned. It was put into active service in early April 1942 but was quickly knocked out of service and subsequently abandoned.