During the Russian Civil War Kromiadi joined the White movement, achieving the rank of colonel.

[4] During World War II, Kromiadi became a Nazi official and a pioneer of the Russian Liberation Movement.

Kromiadi made several attempts to attract white émigrés to Vlasov, and was finally successful by the time of the Prague Manifesto, having secured the support of two branches of the Russian Orthodox Church.

[7] In the final days of WWII, Kromiadi was wounded in the leg and, when Vlasov and his staff relocated to Füssen, he was placed in a private residence in order to recover.

[2] In 1980, he wrote a book on his experience in the Russian Liberation Movement called For Land, for Freedom..., which was published in San Francisco.