Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.

The Philippine–American War, known alternatively as the Philippine Insurrection, Filipino–American War, or Tagalog Insurgency, emerged following the conclusion of the Spanish–American War in December 1898 when the United States annexed the Philippine Islands under the Treaty of Paris. Philippine nationalists constituted the First Philippine Republic in January 1899, seven months after signing the Philippine Declaration of Independence. The United States did not recognize either event as legitimate, and tensions escalated until fighting commenced on February 4, 1899, in the Battle of Manila.

Filipinos are citizens or people identified with the country of the Philippines. Filipinos come from various Austronesian peoples, all typically speaking Filipino, English, or other Philippine languages. Despite formerly being subject to Spanish administration, less than 1% of Filipinos are fluent in Spanish. Currently, there are more than 185 ethnolinguistic groups in the Philippines each with its own language, identity, culture, tradition, and history.

The siege of Catubig was a long and bloody engagement fought during the Philippine–American War, in which Filipino guerrillas launched a surprise attack against a detachment of U.S. infantry, and then forced them to abandon the town after a four-day siege. It began on April 15, 1900, and lasted four days before the survivors were rescued. The attack was very similar to the Balangiga Massacre south of Catubig a year later.

Catubig, officially the Municipality of Catubig, is a municipality in the province of Northern Samar, Philippines. According to the 2020 census, it has a population of 32,174 people.