The 5-inch/38 caliber gun is a naval artillery piece used primarily by the United States Navy during World War II and beyond. It has a caliber of 5 inches (127 mm) and is designed to fire a variety of projectiles, including high-explosive and armor-piercing shells. This gun is known for its versatility and effectiveness against both surface and aerial targets. Mounted on various classes of ships, including destroyers and cruisers, the 5-inch/38 caliber gun features a dual-purpose design, allowing it to engage enemy vessels and aircraft. Its reliable performance and relatively lightweight construction made it a staple in naval warfare, contributing to the success of many naval operations during the war and in subsequent conflicts.