The October 7 attacks were a series of coordinated armed incursions from the Gaza Strip into the Gaza envelope of southern Israel, carried out by Hamas and several other Palestinian militant groups in 2023, during the Jewish holiday of Simchat Torah. The attacks were the first large-scale invasion of Israeli territory since the 1948 Arab–Israeli War. In response, Israel launched a large-scale military operation in Gaza, beginning the ongoing Gaza war.
The attacks began with a barrage of at least 4,300 rockets launched into Israel and vehicle-transported and powered paraglider incursions into Israel. Hamas militants breached the Gaza–Israel barrier, attacking military bases and massacring civilians in 21 communities, including Be'eri, Kfar Aza, Nir Oz, Netiv Haasara, and Alumim. According to an Israel Defense Forces (IDF) report that revised the estimate on the number of attackers, 6,000 Gazans breached the border in 119 locations into Israel, including 3,800 from the elite Nukhba forces and 2,200 civilians and other militants. Additionally, the IDF report estimated 1,000 Gazans fired rockets from the Gaza Strip, bringing the total number of participants on Hamas's side to 7,000.