After Oesch was released from prison in February 1948, he devoted himself to military history, researching and writing extensively on Finnish experiences in World War II.
Oesch was also one of the founders and chief editor of a popular magazine on World War II Finnish history.
Oesch foi um dos fundadores, e editor-chefe, de uma revista popular durante a segunda guerra mundial.
Oesch foi uma das fundadoras, e editora-chefe, de uma revista popular durante a segunda guerra mundial.