Introduced in 1942, the Hedgehog ASW mortar transformed anti-submarine warfare by firing multiple contact-fused bombs that only exploded on impact, dramatically increasing kill probability. A single launcher cost around USD 25,000–30,000 (1942 value)—cheap compared to ships it protected. Each projectile cost only a few hundred dollars, proving precision and volume could defeat far costlier submarines. ⚓🔥 🇺🇸 #HedgehogASW #AntiSubmarineWarfare #WWIINaval #Military #NavalHistory | Navy Arsenal

NATO allies deploy 16,000 troops across Estonia in Exercise Hedgehog 25, testing rapid reinforcement, armored operations, and joint combat readiness on the alliance’s eastern flank. | Military Mechanics