Operation Fallen Leaves - He is a plan

Japanese: 枯葉作戦 - かれはさくせん

An operation carried out by the US military during the Vietnam War. A type of chemical agent against plants was used in large quantities to kill jungles that served as hiding places for guerrillas. Herbicides such as 2,4-D and 2,4,5-T, growth inhibitors, and defoliants such as rhodanese ammonia and zinc chloride were used and sprayed over a wide area by airplane and helicopter. These were said to be mostly harmless to humans and livestock, but a survey by the US side conducted immediately after the operation reported the deaths of livestock. Arsenic compounds also remained in the soil and became a problem as they were dangerous. The US military began Operation Defoliation in South Vietnam in November 1961 and ended it in 1971. The area covered by the operation reached 24,000 ^km2 , 30% of the total forest. In 1981, the Vietnamese government announced that the defoliation had caused numerous aftereffects on the human body (stillbirths, births of severely disabled children, an abnormal increase in cancers among young people, etc.) mainly in the areas where Operation Defoliation was carried out. (→ Defoliants)

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

ベトナム戦争中，アメリカ軍が実施した作戦。対植物化学剤の一種を大量に使用して，ゲリラの隠れ場所となるジャングルを枯れさせた。2,4-D，2,4,5-Tのような除草薬，成長抑制剤，あるいはロダンアンモニアや塩化亜鉛のような落葉剤が使用され，飛行機やヘリコプタで広い範囲に散布された。これらは人畜にはほとんど無害といわれていたが，作戦実施直後に行なわれたアメリカ合衆国側の調査でも，家畜類の死が報告された。またヒ素化合物は土壌に残留して危険があると問題になった。アメリカ軍は南ベトナム内で，1961年11月に枯葉作戦を開始，1971年に終結した。その面積は全森林の 30%，2万4000km²に達した。1981年ベトナム政府は枯葉作戦実施地域を中心にして，人体に数々の後遺症 (死産，重度の障害児出産，年少者の癌などの異常な激増) を残していることを発表した。（→枯葉剤）

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