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| Location Lat 15° 50' 5N Long 120° 56' 39E San Isidro is at an elevation of 830' / 252m above sea level in Nueva Ecija Province on Luzon in the Philippines. Also incorrectly spelled San Isador or San Ishidro. Connected by Highway 8 (Route 8). To the northwest is Lupao and to the southeast is San Jose. Wartime History During late December 1941, occupied by the Japanese Army. After the January 9, 1945 U.S. Army landing at Lingayen Gulf, San Isidro was defended as an outpost by the Japanese Army, 2nd Tank Division including a tank company from the 7th Tank Regiment and a tank company from the 10th Tank Regiment. By early February 1945, the U.S. Army was assaulting the nearby towns of Monoz and Lupao. On February 4, 1945 by afternoon the U.S. Army 25th ID, 161st Infantry Regiment moving cross country to the southeast across Route 99 then across Route 8 southeast of San Isidro and established a roadblock. On February 5, 1945 the Japanese defenders in San Isidro were ordered to withdraw. Overnight, the garrison withdrew into the foothills to the east. On February 6, 1945 facing only scattered rifle fire, the 161st Infantry Regiment occupied San Isidro and chased stragglers to the north that were headed into the hills. During the battle of San Isidro, the Japanese lost roughly 100 killed and abandoned 23 tanks, 18 trucks, two 75mm guns and other equipment. The 161st Infantry Regiment lost 15 killed and roughly 15 wounded in the vicinity. References U.S. Army in World War II Triumph in the Philippines Chapter XI Protecting XIV Corps' Rear and Flanks pages 191 (map), 192 (San Isidro garrison), 197, footnote 20, footnote 27 Taki Home Page - The History of Battles of the Imperial Japanese Tanks, Part II Contribute Information Do you have photos or additional information to add? Last Updated December 29, 2025 |
 Map Feb 1-8, 1945 Map Fallingrain |
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