Analysis of information sources in references of the Wikipedia article "Military attaché" in English language version.
[...] the Soviets last shot at an American observer team on March 24, 1985, when Maj. Arthur D. Nicholson Jr., an Army officer, was killed by a Soviet sentry near the East German town of Ludwigslust. Major Nicholson had been observing a Soviet tank shed.
A U.S. official said that Gromov was selected for expulsion on the advice of the Pentagon, which described him as 'very active' in collecting defense information for the Soviets.
A U.S. official said that Gromov was selected for expulsion on the advice of the Pentagon, which described him as 'very active' in collecting defense information for the Soviets.