US Naval Base Carolines

The bases were built to support the island hopping Pacific War efforts of the allied nations fighting the Empire of Japan.

At the start of World War I in 1914 British warships destroyed the German colonial plantation owner's radio station.

The United States Army Air Forces bombed the Truk base, but it was bypassed in the amphibious landing war.

The US Navy survey ship USS Sumner found the lagoon was well protected and usable for fleet anchorage.

Truk was attacked by air and had its supply lines cut off by sea, called Operation Hailstone.

Sorlen Island and the north anchorage of Ulithi Atoll in late 1944.
Caroline Islands north of the Melanesia Islands
A map of the Federated States of Micronesia
Micronesia is one of three major areas in the Pacific Ocean, along with Polynesia and Melanesia