The M982 Excalibur turns standard artillery into a precision weapon with pinpoint accuracy

Countries & Cities · Published 15 October 2026 Swipe more like this →

In short: The M982 Excalibur is a GPS-guided artillery shell that transformed modern warfare by allowing commanders to strike targets with incredible precision. By using folding glide fins to navigate, this munition can hit within meters of a target, drastically reducing the number of shells required for a successful mission.

Developed through a collaboration between the US Army and Swedish BAE Systems Bofors, the Excalibur was designed to solve the inherent inaccuracy of conventional artillery. While standard unguided shells can land up to 150 meters away from a target, the Excalibur boasts a circular error probable of just 4 meters. This precision allows it to be used in close support of friendly troops—sometimes as near as 50 meters—or in sensitive urban environments where collateral damage must be strictly minimized.

The mechanism behind this accuracy involves GPS and inertial guidance combined with folding glide fins. After being fired, these fins deploy to allow the projectile to glide along a ballistic arc toward its destination. The system is highly versatile, featuring a multi-function fuze that can be programmed to detonate in the air, upon impact, or after penetrating a target. This capability means a single Excalibur round can often achieve what would otherwise require between 10 and 50 conventional artillery shells.

Despite its effectiveness, the platform has faced challenges, including vulnerability to electronic warfare. When first supplied to Ukraine, the shell initially achieved a 70% efficiency rate, but Russian electronic countermeasures eventually reduced this to 6%. Additionally, the program has seen significant cost fluctuations. While early procurement costs were high, a 2012 RAND report noted that these increases were largely driven by reduced order volumes, as the shell's superior accuracy meant fewer rounds were needed to achieve the same tactical effect. Today, the system continues to evolve with newer variants, such as the Excalibur S, which adds laser-guidance to track moving targets.

The Excalibur is compatible with a wide range of international artillery systems, including the American M777, the German PzH 2000, and the French Caesar. Its development history, which began in 1992, reflects a shift toward discriminating, precision-guided munitions. From its combat debut in Iraq in 2007 to its extensive use in modern conflicts, the Excalibur remains a cornerstone of precision artillery, demonstrating how advanced guidance technology can fundamentally change the efficiency and safety of long-range fire support.

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