Background
Sproģis was born in Riga in 1904.
Sproģis was born in Riga in 1904.
Subsequently, he attended military academy, finishing in 1922.
In 1920, he was sent to Komosomol courses in Moscow, after which he continued his military service in the Red Army fighting against the White forces of General Wrangel. Thereafter he served in the border guards until 1928, when he was sent to the Joint State Political Administration Border Guards School in Moscow for further training. Following these courses, he was assigned to the Special Section (Counterintelligence) of the Byelorussian Soviet Socialist Republic People’s Commissariat of Internal Affairs, where he served until 1936.
He then was sent on a special mission in the Spanish Civil War.
After returning from Spain in 1937, he began courses at the Red Army"s Frunze Military Academy, completing his studies in 1941. With the start of Operation Barbarossa, Sproģis was involved in organising anti-German partisan resistance in Belarus and Latvia.
Later, he was appointed to the special group of activists from the Communist Party of Latvia, whose job it was to re-establish the functioning of the Latvian Soviet Socialist Republic after the Germans had been driven out of the country. From 1944, he resided in Riga.
In 1919 he voluntarily joined the Latvian Red Riflemen in defence of the short-lived Latvian Socialist Soviet Republic. At the same time he also joined the Communist Youth League.