[1] Ingr was born in Vlkoš in the Margraviate of Moravia (present-day Czech Republic) in 1894 to his father Jan, mayor of the municipality.

In 1916 he transferred to the 2nd Artillery Regiment of George of Poděbrady with the rank of Lieutenant and joined the famous Czechoslovak Legions.

By the end of the war he had risen to Captain and was able to speak five foreign languages (German, Russian, Serbian, French and Italian).

After the establishment of the Czechoslovak government-in-exile in London, Ingr was appointed Minister of National Defense.

On 6 July 1945 Ingr was promoted to army general and retired, becoming his country's ambassador in The Hague.