February 4 to 5 - 12,000 American troops advanced through 2 miles of Filipino front at the Battle of Manila. It was the first and largest battle of the Philippine–American War, resulting to 60 American dead and 2,000 Filipino dead.
February 10 - A brigade of American soldiers attacked Filipino troops after 3 hours of artillery bombardment at the Battle of Caloocan. The capture of Caloocan left American forces in control of the southern terminus of the Manila to Dagupan railway, along with five engines, fifty passenger coaches, and a hundred freight cars.
March 27 - American troops marched through Marilao River while being fired upon by Filipino troops on the opposite bank.
March 31 - Malolos, the capital of the Republic, fell to advancing American soldiers.
April 9 to 10 - American troops fought the Battle of Santa Cruz as part of their Laguna de Bay campaign.