Where naval shore bombardment had its greatest effect

In which theatre did naval shore bombardment have the greatest impact?

Probably the Pacific, although Normandy and Mediterranean island campaigns also show how naval guns protected landings and sometimes decided local operations.

Normandy's bombardment protected a tightly timed landing and suppressed batteries that could disrupt shipping, but artillery ashore soon assumed much of the fire-support burden. The Pacific is identified as the stronger overall case because repeated island assaults depended on naval guns for preparation and support. Mediterranean island operations provide smaller examples in which even a destroyer's visible firepower could decide the result.