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. At war’s end, it was just a matter of circling back to collect 50,000 surrenders.
Unfortunately, the castaway Truk garrison did not pass the last months of the war with sufficient care for its foreseeable postwar situation.
According to testimony given the postwar Guam war crimes tribunal, 10 American prisoners were murdered on Truk in 1944 “through injections, dynamiting, tourniquet applications, strangling and spearing.” (Source) Hiroshi Iwanami was executed for these gruesome experiments/murders in January of 1949.
Ueno, a lieutenant surgical commander, hanged for two other killings that read quite a bit murkier.
Five American POWs were being held in a temporary stockade that was hit by an American bombing raid in June 1944 — killing three of those prisoners.
The surviving two were severely injured, eventually leading Dr. Ueno on June 20, 1944, to perform what he characterized as a legitimate exploratory surgery on one of those men. His prosecutors framed it instead as a fiendishly gratuitous vivisection.
During that procedure, an order arrived for the execution of both the prisoners. The other guy, the one Dr. Ueno wasn’t operating upon, he never had in his care at all; that unfortunate fellow ended up being bayoneted to death. The man on the table (both men’s names were unknown to the prosecuting court) Dr. Ueno stitched back together well enough that subalterns could stretcher him out to a swamp and chop off his head.
Here’s the difficult part: Ueno actually gave the immediate order to execute his ex-patient.
As described in the National Archives’ Navy JAG Case Files of Pacific Area War Crimes Trials, 1944-1949, the physician’s barrister mounted a quixotic philosophical defense of this deeply indefensible order, noting the principled acceptability of euthanasia in Japanese hospitals (so he said), the inevitability of the prisoner’s approaching execution via superior orders, and the agony the man was already in from his wounds.
[Dr. Ueno] had expected that some other person would dispose of this prisoner. But he could not find anyone who looked like the person to carry this out … the thought dominated his mind that all hope is lost to save this prisoner. His fater has been determined. Yet the prisoner is in pain …
He was faced with the predicament of killing by his order the prisoner which he had treated as hiw [sic] own patient. What sarcastic fate was this that he had to face? As the Napoleon, described by George Bernard SHAW, and as McBeth [sic] described by William SHAKESPEARE, the accused, UENO was also “a man of destiny.”
A certain English poet wrote, “Life protracted is protracted woe.” If the life of the prisoner in the present case was protracted one second, he would have so much more suffering to endure. Should it be condemed [sic] so severely to shorten one’s life under such circumstances and shorten his last woe in this world?
There were in all either 10 or 13 official executions of Japanese war criminals on Guam from 1947 to 1949. It’s devilishly difficult to find those 13 enumerated by name and date, but it appears to me that Ueno and his boss Admiral Shimpei Asano were the very last to achieve that distinction.**
The readable little history on Truk island and the U.S. Navy operations against it, Ghost fleet of the Truk Lagoon, Japanese mandated islands”, captures the scene.
Shortly after eight o’clock on the humid, tropical evening of March 31, 1949, according to War Department Pamphlet #27-4 Procedure For Military Executions, the 5’6″ Japanese surgeon with extremely strong neck muscles was escorted up the nine steps to the gallows. The handcuffs were removed by a Marine guard and a strap placed to secure his arms to his side and another placed around his legs. A black hood was placed over his head and at 8:26 p.m. the floor panel on which he was standing fell from under his feet and Ueno dropped 94 inches to eternity. He was the last to die, as Rear Admiral Shimpei Asano* had preceded him only moments before. Under the dubious honor that rank has its privileges — the Admiral went first.
* Executed for these same two murders on Truk, as well as two other POWs killed at Kwajalein, in the nearby Marshall Islands.
** Angered by Naval administration of the island, Guam’s Congress had staged a walkout earlier in March 1949. This action did successfully force an end to Naval government.