Six O'Clock in the Evening After the War (movie, 1944)

Designed as a successor to "They Met In Moscow", with the same director, star and composer, "Six P. M." (1946 American release title) has two artillery officers meeting an attractive girl in Moscow between battles. One falls in love with her and they vow to meet in Moscow on a bridge at Six P.M. when the war ends. The war puts them on diverse trails, but the pledge is fulfilled against a setting of Moscow's famous fireworks displays.