During the Great Patriotic War, Milchin joined Narodnoe Opolcheniye, then worked at CIFS (Almaty) in evacuation as an artist on several movies.
Among his collaborators were Ivan Ivanov-Vano, Alexandra Snezhko-Blotskaya, Mikhail Tsekhanovsky, the Brumberg sisters and others.
His filmography includes Sampo (1959) by Aleksandr Ptushko, Michman Panin (1960) by Mikhail Shveitser, My Younger Brother (1962) by Aleksandr Zarkhi, Maria, Mirabela (1981) by Ion Popescu-Gopo and other titles.
[3] He also taught art at VGIK, illustrated books and served as a member of ASIFA.
Milchin died on 28 June 1987, a few months after his friend and teacher Ivan Ivanov-Vano.