An (often surprise) attack or assault — a raid, charge, or violent strike, frequently used for military or sudden violent actions.
夜明けに敵の部隊が基地を襲撃した。
At dawn, the enemy unit attacked the base.
銀行が武装した男に襲撃され、現金が奪われた。
The bank was assaulted by armed men and cash was stolen.
警察は襲撃の情報を受けて現場に急行した。
The police rushed to the scene after receiving information about an attack.