Eighty years ago in September 1945, U.S. soldiers still faced real dangers and challenges, and many were called on to display true heroism. At the time, my father, Sgt. Roger Thomas, was newly arrived in India and was serving as a Toxic Gas Handler with the 771^st Chemical Depot Company (Aviation) at Ondal Advanced Chemical Park in West Bengal. He was one of many replacements for more experienced soldiers who had been managing the CBI’s central stockpile of toxic chemical bombs. The bombs were filled with the same toxins that had been used during WWI, but had been manufactured and deployed in far greater quantities for possible “retaliation in kind” if Germany or Japan again initiated chemical warfare.

Eighty years ago, on March 5, 1945, Lt. Col. Wyss from U.S. Chemical Warfare Headquarters in Calcutta visited Ondal Advanced Chemical Park in West Bengal, India. The purpose of his visit was to reassess the stockpile of toxic chemical bombs then being maintained at Ondal by the 771st Chemical Depot Company (Aviation). Immediately after Wyss’s visit, the soldiers of the 771st began a major project to dispose of tens of thousands of chemical bombs that were judged to be either unneeded or unusable.

Long-secret documents from WWII show that the US Army’s 771st Chemical Depot Company buried thousands of M47A2 mustard-filled bombs at Ondal Airbase in British-ruled India. The 769th Chemical Depot Company helped bury hundreds of similar bombs at nearby Chakulia Airbase. Practically, legally and morally, the US should acknowledge its responsibility to remediate these burial sites.

By May 1944, the US had equipped four airbases near Kharagpur, India with 130 of America’s newest and largest bombers, the B-29 Superfortress….