A canceled US Army supergun returns for the hypersonic era

The US Army's once-canceled long-range 'supergun' concept is being revisited for the hypersonic era, promising to send cheap projectiles to very long ranges.

At a Glance

A canceled long-range cannon concept returns
Aim: economical fires at very long range
A cost alternative to hypersonic missiles
Filling a gap between artillery and missiles

What happened

The US Army's previously canceled long-range 'supergun' concept has resurfaced in light of hypersonic-era needs. The core idea is to fire at very long ranges with far cheaper projectiles than costly missiles.

The program was once shelved over range, cost and technical difficulty. But the high unit cost of hypersonic weapons is making large-caliber cannon solutions attractive again.

System context

Long-range cannons aim to fire hundreds of kilometers using long barrels and advanced munitions, a capability well beyond conventional howitzer ranges.

Hypersonic missiles offer high speed and maneuver but cost much per round. Cannon shells are far cheaper at scale, so the balance could make the two approaches complementary.

Technical and operational significance

Very-long-range artillery poses serious engineering problems in barrel wear, projectile design and targeting. The concept's revival suggests these are being reworked with new materials and guidance technologies.

Depth of firepower is decisive in modern land warfare; threatening enemy logistics and command centers from afar confers strategic advantage.

Why It Matters

Long-range fires sit at the heart of contemporary land doctrine. Turkey is likewise building this depth with the TRLG-230 and long-range missile/rocket systems.

The cost-effect balance is reshaping choices between missiles and artillery.