The Truk Atoll, in Micronesia, is more commonly known today as Chuuk. It’s a hot diving location notable for the many sunken World War II Japanese hulks to be explored there — the legacy of its once-pivotal position in the Pacific War. Japan used Truk as forward naval base in the South Pacific, and armored up its little islands like an armadillo. Rather than capture it outright, the U.S. Navy bombed Truk right out of the war in February 1944, leaving that enormous warship graveyard and a stranded stronghold of starving soldiers who were left to wither on the vine....