Jeronimas Plečkaitis

After the military coup d'état of December 1926, Plečkaitis became an active member of the opposition to President Antanas Smetona and Prime Minister Augustinas Voldemaras.

He organized a group of men, known as plečkaitininkai, that received assistance from Poland and continued to plot against the Lithuanian government.

He joined the Social Democratic Party of Lithuania during the Russian Revolution of 1905 and helped organizing worker strikes in the Suwałki Governorate.

[3] Military coup d'état of December 1926 installed the government of President Antanas Smetona and Prime Minister Augustinas Voldemaras.

Thus members of the opposition, including Plečkaitis, left or were removed from Kaunas to the province where they continued to plot against the government and organize the failed Tauragė Revolt on 9 September 1927.

[5] Plečkaitis commanded a group of 30–40 men that gathered near Balbieriškis and planned to attack military barracks in Alytus hoping that the soldiers would join them.

[8] Plečkaitis wanted to organize a coup to overthrow Smetona's regime, but his efforts in 1928 were blocked by the Lithuanian intelligence.

[10] Lithuanian news agency ELTA claimed that the group was planning to bomb a train that Prime Minister Augustinas Voldemaras took from Geneva.

He was arrested again in March 1940 by Lithuania when it gained control of Vilnius Region as a result of the Soviet–Lithuanian Mutual Assistance Treaty in October 1939.