He then served in the 7th Sharpshooter Battalion and participated in suppressing the Polish uprising alongside other Russian troops in 1862–1863.
In 1885, he became the Finnish military affairs representative at the Russian War Ministry and was promoted to major general in 1886.
From 1906 onwards, Schauman worked as the financial manager of Finland's General Fire Insurance Company.
After his son Eugen Schauman[3] assassinated Nikolay Bobrikov, a house search was conducted, during which a plan for establishing a national shooting association to replace the abolished Finnish military was discovered.
However, after the assassination of Minister of State Vyacheslav von Plehve, the case was returned to Finland for review by the Turku Court of Appeal, which acquitted him, leading to his release in 1905.