was firing russian

• увольня́ть

  fire, dismiss

  discharge, firing, was firing, give the sack, sack

• истапливавший

  that was heating, that was firing (a stove/boiler), that was melting (completely)

• увольня́вший

  who was dismissing, who was firing

Examples

• Он был приговорен к сме́ртной казни через расстре́л.He was sentenced to death by firing squad.