The US Army reservist, who normally works for Apple, the Silicon Valley-based electronics company, was shot six times as an Afghan assailant opened fire on a group of high-ranking officers at a military training academy earlier this month, The Sunday Times said.
The reservist, who has not been named, used his body as a shield to literally "take a bullet" for the senior British officer, and was hit twice in the leg and once in the shoulder, with a further three rounds stopped by his bulletproof vest.
Details of the act of heroism were revealed in an American casualty report, the newspaper said.
It describes how the reservist returned fire with both his rifle and sidearm.
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