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Naval Gunfire Liaison Officer : ウィキペディア英語版 | Naval Gunfire Liaison Officer
The Naval Gunfire Liaison Officer (NGLO) is a U.S. Navy officer (typically a Lieutenant Junior Grade (LTJG) or Lieutenant (LT) Unrestricted Line Officer) who assists infantry personnel requiring naval gunfire support. The mission was defined during World War II amphibious warfare, and these personnel remain an important coordination point for effective utilization of naval guns by troops ashore. ==History== United States Marine Corps Lieutenant Colonel Earl Ellis 1921 prediction of Pacific island warfare with Japan prompted publication of a ''Tentative Manual for Landing Operations'' in 1934. Naval gunfire support was the second of six major elements of the manual. The Gallipoli Campaign had revealed fundamental difficulties in using shipboard guns for troop support. The trajectory of high velocity naval artillery was significantly different from field artillery howitzers typically used for gunfire support. Infantry officers were surprised by the inability of flat trajectory naval guns to hit targets behind low hills; and the relatively wide distribution of fall of shot along the axis of fire sometimes endangered friendly troops behind or in front of the target. Shells intended to penetrate armored ships produced a relatively small damage radius against unfortified targets; and shipboard observation devices designed to observe shell splashes at sea were unable to determine whether their shells were striking intended shore targets. Although Marine Corps officers who have served aboard warships are more familiar with naval artillery, Army officers without such experience are often in positions requiring gunfire support during amphibious landings. Naval officers familiar with shipboard guns are able to advise infantry officers ashore concerning the capabilities of naval artillery to engage specific targets. The naval officer's familiarity with shipboard communications systems enables him to translate the infantry objectives and fall of shot observations to the appropriate shipboard personnel for effective engagement of targets. The tentative manual of 1934 became ''Fleet Training Publication 167'' in 1938; and the Army issued a field manual with virtually identical text in 1941.〔
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