What does HESH stand for?

HESH stands for High-explosive squash head. This terminology pertains to a type of explosive round designed for use against armored targets. The design of the HESH projectile allows it to deform upon impact with a target and spread out its explosive force over a larger area. This deformation creates a shock wave that can penetrate the armor and cause significant damage to the interior, even if the projectile does not penetrate the armor itself.

The other options do not accurately represent the characteristics or purpose of HESH munitions. High-energy shock head and Heavy-explosive saturation head, while they sound plausible, do not describe the specific mechanism or effectiveness that HESH provides. High-efficiency strike head could suggest a more general explosive type, but it lacks the specificity related to the unique design and application of HESH projectiles in military operations. Thus, the identification of HESH as High-explosive squash head is accurate and important for understanding its function in military contexts.