History of Lanao del Sur

The Moro Rebellion (1902–1913) was an armed conflict between the Moro people and the United States military during the Philippine–American War. The rebellion occurred after the conclusion of the conflict between the United States and First Philippine Republic, and saw the US move to impose its authority over the Muslim states in Mindanao, Jolo and the neighboring Sulu Archipelago.

Japanese Invasion of Malabang (Filipino: Paglusob ng mga Hapones sa Malabang) was part of the Japanese landings on the western coast of Mindanao that began on April 29, 1942. Kawaguchi Detachment landed in three important points in west coast of Mindanao including Malabang in then undivided Lanao Province. Defending forces of Filipino and American troops resisted but lacked artillery, and due to Japanese naval and air support were overwhelmed and forced to retreat.

The 1955 Lanao earthquake struck Lanao del Sur on April 1 at 02:17 local time. The earthquake measuring 7.4 on the moment magnitude scale and assigned a maximum intensity of VIII (Severe) on the Modified Mercalli intensity scale was one of the largest to hit Mindanao. It caused immense damage around the northern and central parts of Mindanao, as well as the southern reaches of Visayas. It killed at least 465 individuals and injured a further 898.

The Confederate States of Lanao (Maranao: Pat a Pangampong sa Ranao, "Four States of Lanao") is a legislative confederation of the four Maranao states (pangampong) of Bayabao, Masiu, Unayan, and Balo-i centered around Lake Lanao in the center of the island of Mindanao, Philippines.

The Battle of Taraca was fought in what is now Taraka, Lanao del Sur in the Philippines between the Moro people of Mindanao and the United States during the Philippine–American War. General Leonard Wood invited the region's datus to a peace conference, but the Sultan of Taraca, refused to attend. The Taraca River Valley was where most of the Lake Lanao Moros lived, the home of Datu Ampuanagus and Datu Duli the most daring warrior

The Battle of Bayang (Maranao: Padang Karbala) was the first major engagement of the Moro Rebellion. It was a punitive expedition led by Colonel Frank D. Baldwin in retaliation for murders committed by Moros in Malabang and Parang on the island of Mindanao. Col. Baldwin led seven companies of the 27th Infantry and the 25th Battery Light Artillery against the Moros on the south shore of Lake Lanao, the village of Bayang in particular. The Americans took Fort Pandapatan and the fort of Datu of Binidayan, killing the Sultan of Bayang in the process.

The siege of Marawi (Filipino: Pagkubkob sa Marawi), also known as the Marawi crisis (Krisis sa Marawi) and the Battle of Marawi (Labanan sa Marawi), was a five-month-long armed conflict in Marawi, Philippines, that started on May 23, 2017, between Philippine government security forces against militants affiliated with the Islamic State (IS), including the Maute and Abu Sayyaf Salafi jihadist groups. The battle also became the longest urban battle in the modern history of the Philippines.

The 2016 Butig clashes were armed conflicts that began on February 20, 2016, between the Philippine Army and a group of Moro insurgent sympathizers of ISIS and Jemaah Islamiyah led by the Maute group in Butig, Lanao del Sur, Philippines. Three Philippine Army soldiers were killed in action, 11 wounded, and 20 terrorists killed in the early phase of battle. 335 families fled to Marawi City and 657 families took refuge in Masiu.

Lanao was a province of the Philippines from 1914 to 1959. Today, the province comprises Lanao del Norte and Lanao del Sur.

Task Force Bangon Marawi (transl. Task Force Rise Up Marawi) was a government inter-agency task force group organized by President Rodrigo Duterte in June 2017 to facilitate the rehabilitation, recovery and reconstruction efforts in Marawi after the battle between ISIL-linked militants and government forces in the city left the locality in ruins. The agency was abolished by Duterte's successor, President Bongbong Marcos on December 22, 2023.