Gunnar Isak Lindqvist (13 December 1898 in Helsinki – 5 January 1973) was a Finnish Jäger and a senior lieutenant in the Estonian Army. He had received military training during the First World War as a Jäger and received his baptism of fire on the Eastern Front at Misse River in 1916. Later, he took part in the Finnish Civil War in the White Army as a signals officer and in the Estonian War of Independence as a battalion commander. During his life he served in the armies of three states and was a veteran of the six wars. In the 1930s and 1940s, Lindqvist took part in several Nazi groups.
https://en.wikipedia.org/wiki/Gunnar_Lindqvist