The next day, D-Day, she continued screening duties and fired on selected shore targets while marines landed on the western side of the island.
The Barb also conducted several rocket attacks against shore targets on this same patrol, the first ever by an American submarine.
German submarines even slipped into the region's small harbors to shell shore targets and to sink cargo ships at anchor.
Along with screening carrier task forces, she patrolled off Korea, joined in bombarding shore targets, and escorted shipping from Japan to the action areas.
The escort carriers launched their planes against shore targets and protected convoys offshore through the invasion of Tarawa.
The scout planes, maintaining about eight hours of flight time daily, struck at other shore targets, and they also kept up antisubmarine patrols.
She took part in Allied invasion of Italy, bombarding shore targets and repelling German planes.
In support of the build-up of beachheads, naval ships, directed by observers ashore with assault forces, fired on shore targets.
Despite orders to attack war ships whenever possible, the submarines targeted only merchant vessels and conducted minor bombardments of shore targets.
The main purpose of the gun is Naval Gunfire Support - artillery bombardment of shore targets.