From Wikipedia, the free encyclopedia

Lieutenant Colonel Earl Hancock "Pete" Ellis (December 19, 1880 – May 12, 1923) was a United States Marine Corps officer, and author of Operations Plan 712-H: Advanced Base Operations in Micronesia, which became the basis for the American campaign of amphibious assault that defeated the Japanese in World War II.

Ellis served at Cavite during the Philippine-American War and was later stationed at Guam before serving with the AEF in France during World War I.

Ellis died under mysterious circumstances on the Japanese-held island of Palau in the Caroline Islands. In contemporary newspaper accounts and in later years, numerous conspiracy theorists would allege that Ellis was assassinated by Japanese military authorities; however, detractors of such theories note that Ellis was known to have a severe drinking problem and likely died from an alcohol-related illness such as cirrhosis of the liver. Ellis's official medical records indicate that not long before his death, he was admitted to a naval hospital for treatment of delirium tremens and hallucinations.^[1] Ellis had also tendered his undated resignation as a Marine officer shortly before leaving for Palau, in order that he might prevent embarrassment or undue suspicion from falling upon the United States or the Marine Corps should his mission be compromised. An alternate opinion, expressed by researcher Dirk Anthony Ballendorf, is that Ellis' resignation, along with the tremors and hallucinations, are attributable to depression and alcoholism. Ballendorf writes: "That the Japanese would have placed poison in his whiskey is unlikely since, for Ellis whiskey itself was poison enough."^[2]

Complicating the matter further, the agent sent to investigate the circumstances of Ellis' demise died in a freak accident, and with him expired the only outside eyewitness knowledge as to the state of Ellis's corpse before it was cremated. Chief Pharmacist Lawrence Zembsch — who had treated Ellis during his hospitalization — travelled on a Japanese steamer to Palau, where he stayed at the Japanese officer's barracks (Ellis had stayed with native Palauan nobility and married a young Palauan chefress). After talking to Japanese authorties who had dealings with Ellis (including the medical officer), Zembsch witnessed and photographed the exhumation of Ellis's body and its cremation, taking custody of the remains when this was completed. Zembsch suffered a nervous breakdown on the return voyage and was admitted to a hospital in Yokohama, which was soon after buried by falling rubble in the 1923 Great Kanto Earthquake^[3], killing Zembsch.

In the end, Ellis's maps and papers were confiscated by Japanese authorities. An inquiry undertaken at the behest of General Douglas MacArthur after the war found no trace of any of Ellis's effects, nor a report on Ellis's activities by the Japanese governor of the island.^[4] It is not clear how competently Ellis performed his map-making and analysis, given his demonstrated instability in the final months of his life. The Japanese had not yet begun fortifying Palau during his sojourn there, but had Ellis survived, it is surmised that he would have completed addenda to Advanced Base Operations in Micronesia that would have presumably provided military authorities with "...useful..." information on the potential military uses of the islands.^[5] In any case, Ellis's overall strategic concerns remain valid in the light of later events. Ellis is remembered today for his military intelligence work and for accurately predicting the bloody Pacific War two decades before it began.

• Ballendorf, Dirk Anthony, Earl Hancock Ellis: A Final Assessment, Marine Corps Gazette, Vol. 74, pp. 78-87, Nov. 1990.
• Ballendorf, Dirk Anthony & Bartlett, Merrill, Pete Ellis: An Amphibious Warfare Prophet, 1880-1923, Annapolis, MD, Naval Institute Press, 1997.

• USMC History And Museums Division Biography: Earl Ellis
• Warfighter's Encyclopedia bio