short summary of his record:
*Chief of Operations in Mannerheim's HQ from start of Winter War
*in January 1940 sent by Mannerheim personally to IV Corps HQ to make sure IV Corps attacks when ordered to, ended up orchestrating the Lemetti motti (Soviet 168th division lost 5000 men there)
*acting Chief of Staff of IV Corps in 1941 (the actual Chief of Staff, general Oesch got sick & Corps commander general Laatikainen was too drunk most of the time to do his own job, so Nihtilä had to command the Corps), he orchestrated the liberation of Viipuri in 1941 despite Laatikainen's incompetence.
*commander of Infantry regiment 16 June 1942 - December 1942
*back to Chief of Operations in December 1942
*in Spring 1944 stepped on several peoples' toes by insisting that the defenses on Karelian isthmus were falling apart & the men becoming lazy and complacent, only weeks later he was proven right which infuriated everyone whose toes he had stepped on.
*organized the "decentralized storage of weapons" aka. "weapons cache plot" in late summer/autumn 1944 where one infantry battalion's weapons, equipment and supplies were spirited away & hidden in each of the Civil Guard districts (20 or so battalions' worth of equipment total) in preparation for Soviet occupation, the plot was discovered in 1946 & Finnish communists who were plotting a coup were absolutely furious.