Japanese Garrison on Provisor Island Falls to 37th Division
Administering a city requires not only looking out for the needs of the individual inhabitants, but also safeguarding city functions such as water and power.
Lt. Gen. Krueger was therefore eager to preserve the water and power supplies of Manila as U.S. forces entered the city. Manila’s steam power generating plant was on Provisor Island, on the south side of the Pasig, and elements of the 37th Infantry Division would not reach it until 9 February. Manila’s water system lay northeast of the city, and securing and protecting it was one of the first missions assigned to the 1st Cavalry Division. The main features of the system were the Novaliches Dam, the Balara Water Filters, the San Juan Reservoir, and the pipelines that carried water among these and to Manila.
The most bitter fighting for Manila, which proved costliest to the 37th occurred on Provisor Island, a small industrial center on the Pasig River. The Japanese garrison, probably less than a battalion, managed to hold off Beightler's infantrymen until 11 February.
Mudge's 1st Cavalry Division had an easier time, encountering little opposition in the suburbs east of Manila. Although the 7th and 8th Cavalry fought pitched battles near two water supply installations north of the city, by 10 February, the cavalrymen had extended their control south of the river. That night, the XIV Corps established for the first time separate bridgeheads on both banks of the Pasig River.
The Battle for Manila (February-March, 1945)