It became the main Soviet fighter in the 70's and 80's, and many were introduced as fighter-bombers, especially during the invasion of Afghanistan.
70-80年代にかけてソ連の主力戦闘機となり、特にアフガニスタン侵攻では戦闘攻撃機として多数が投入された。
https://ja.wikipedia.org/wiki/MiG-21_(%E8%88%AA%E7%A9%BA%E6%A9%9F)
