Battle of Bacsil Ridge
Part of the Second World War and the Philippines campaign (1944-1945)
Date 19 March – 23 March 1945 (4 days) Location San Fernando, La Union, Philippines 16°37′N 120°19′E / 16.617°N 120.317°E / 16.617; 120.317 Result Filipino-American victory
Belligerents
Philippine Commonwealth  United States	Empire of Japan
Commanders and leaders
Russell W. Volckmann George Barnett	Tomoyuki Yamashita Toshio Hayashi
Units involved
121st Infantry Regiment, Philippine Commonwealth Army, USAFIP-NL	Japanese 14th Area Army
Strength
121st Infantry 308th Bomb Wing	3,000 armed troops 2,000 unarmed support forces[1]
Casualties and losses
877 casualties	3,322 killed 407 captured

The Battle of Bacsil Ridge began on 19 March 1945. It was one of the continued main battles of the 1944–1945 Philippines Campaign of the Second World War between the Filipino soldiers under the 121st Infantry Regiment, Philippine Commonwealth Army, USAFIP-NL, under the command of American General Russell W. Volckmann,^[2] and the Japanese Imperial forces under General Tomoyuki Yamashita, which resulted in the capture of San Fernando, La Union on 23 March 1945, and lead to the subsequent capture Bacnotan, La Union after two months of fighting between the armies and guerilla fighters.^[3]