A top attack weapon is designed to attack armored vehicles from above, to take advantage of the fact that the armour is usually thinnest on the top of an armoured vehicle. The device may be delivered as a smart submunition or a primary munition by an anti-tank guided missile (ATGM), mortar bomb, artillery shell, or even an emplaced munition such as a mine. Top attack munitions use either a shaped charge warhead (often now tandem warheads in order to defeat ERA), or an explosively formed penetrator (EFP) warhead fired while over the target (usually by submunition).
A top attack weapon is designed to attack armored vehicles from above, to take advantage of the fact that the armour is usually thinnest on the top of an armoured vehicle. The device may be delivered as a smart submunition or a primary munition by an anti-tank guided missile (ATGM), mortar bomb, artillery shell, or even an emplaced munition such as a mine. Top attack munitions use either a shaped charge warhead (often now tandem warheads in order to defeat ERA), or an explosively formed penetrator (EFP) warhead fired while over the target (usually by submunition).
The top attack concept was first put into service by the Swedish Armed Forces in 1988 with the Bofors RBS 56 BILL top-attack anti-tank missile. thumb|Ukrainian army soldiers fire the [[NLAW in training.]] Another method of top attack is the overfly top-attack (OTA or OFTA) where a missile with a vertically oriented shaped charge jet that fires downwards. A missile is directed to overfly the vehicle where a sensor detects the vehicle, and detonates the shape charge down into the top of the vehicle. This is system employed with the NLAW man-portable ATGM. __TOC__ == Weapon systems using top attack == right|thumb|An Australian Army soldier carrying two [[FGM-148 Javelins at the Besmaya Range Complex in Iraq, October 2016]] thumb|right|An M41 tripod-mounted TOW ITAS-FTL with PADS (a variant of the BGM-71 TOW) of the U.S. Army in [[Kunar Province, Afghanistan, May 2009]] thumb|The firing phase of a SMArt 155 submunition. The submunition is held aloft by a parachute, while the submunition seeks a target and fires Notable weapon systems that utilize top attack include:
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