Zg647. This is the Fort Frank Fresh Water Storage Dam in the Sinalang Cove Valley, left is the down-river side; right is the up-river side, now filled to the rim with small rocks.
Assault waves of the 1st Battalion of this 151st Infantry went ashore 9:03 a.m. April 16 supported by C Company, 113th engineers. The initial wave consisted of two platoons, one securing the beachhead while the other advanced to capture the crest line. Following units placed a block across the north side of the connecting ridge and then occupied the south side of the island. This was followed by securing the western peninsula and then the northern end of the island. No enemy troops were encountered in the sweep but a number of supply dumps were found and destroyed, while all caves were sealed by engineers using explosives and a bulldozer that had been winched to the top of the hill. The only living object found on the island was a pig.
Investigation of documents found showed that the garrison had slipped ashore to Cavite the week before the assault.
Though no resistance was encountered in the capture of Fort Frank, five men were killed and 18 wounded in an undetermined explosion about 11 a.m. Three causes were suggested for the explosion: a booby trap, a short artillery round, or a premature explosion of a demolition charge.