Historian tells of Americans’ rough time in Korea

In 1951 as a kid I saw a simple black-and-white movie called “The Steel Helmet.” It was about a U.S. Army platoon trapped in the cold, winter weather of the Korean War, fighting to stay alive under incessant Chinese attacks. This memory came back to me when I read David Halberstam’s last book, “The Coldest Winter,” subtitled “America and the Korea War.”