 His home was the target of a bomb attack by extreme nationalists (Committee for the Salvation of Lithuania) who suspected him and his French wife to be pro-Polish, he was injured.Galvanauskas was a major force behind the Klaipėda Revolt.Afterwards Galvanauskas led the Lithuanian delegation in Paris, that negotiated the Klaipėda Convention to determine the future of the Klaipėda Region.