Question: Stefan Mokrzecki was once a member of armed forces of what republic that was created in 1920?
Context: Territorial defence battalions (Ukrainian: Батальйо́ни територіа́льної оборо́ни ) were volunteer military units of the Armed Forces of Ukraine under the auspices of the Ukrainian Ministry of Defence in 2014–2015.  They should not be confused with the volunteer units of Special Tasks Patrol Police of Ukraine which created along with territorial defense battalions, but under the auspices of the Ministry of Interior.  The battalions were established in mid-2014, during the early stages of the War in Donbass, to combat the stealth invasion by Russian Armed Forces and the forces of the Donetsk People's Republic, Luhansk People's Republic, and the United Armed Forces of Novorossiya.  32 volunteer territorial defence battalions have been formed.  In autumn 2014 most of the territorial defence battalions were reorganized as motorized infantry battlions of the Ukrainian Armed Forces. The Eastern Military High Command of the Pakistan Armed Forces was a field-level military command headed by an appointed senior 3-star officer, who was designated the Unified Commander of the Eastern Military High Command.  After the partition of India by Great Britain, the Islamic Republic of Pakistan was divided into two territories separated by 1000 mi (prior to the independence of Bangladesh in 1971).  Most of the assets of the Pakistan armed forces were stationed in West Pakistan; the role of the Pakistan armed forces in East Pakistan was to hold out until Pakistan was defeated by India in the west (in case of war).  The Pakistan armed forces created the Eastern Military High Command, with one unified commander of the Pakistan armed forces responsible for the command.  The armed forces (particularly the Pakistan Army), had drawn up a plan to defend Dhaka by concentrating all their forces along the Dhaka Bowl (the area surrounded by the rivers Jamuna, Padma and Meghna). EUTM Mali(European Union Training Mission in Mali) is a European Union multinational military training mission headquartered in Bamako, Mali, which is training and advising the military of Mali.  EUTM Mali will not be involved in combat operations in the north of the country and does not have an executive mandate.  22 European nations (Austria, Belgium, Bulgaria, Czech Republic, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Portugal, Romania, Slovenia, Slovakia, Spain, Sweden, United Kingdom, Greece) and 5 European countries (not members of the EU: Georgia, Montenegro, Serbia, Moldavia and Albania) are engaged in this mission and have sent soldiers to the Republic of Mali.  EUTM Mali is one of the elements of a global approach organized by the EU in Mali defined within the Strategy for the security and development within the region of Sahel."  EUTM Mali respond to the operational needs of the Malian Armed Forces through the provision of: training support for the benefit of the Malian Armed Forces,training and advice on command and control, logistical chain and human resources, as well as training on International Humanitarian Law, protection of civilians and human rights,a contribution, upon Malian request and in coordination with MINUSMA, to the Disarmament, Demobilisation and Reintegration process framed by the Peace Agreement, through the provision of training sessions in order to facilitate the reconstruction of inclusive Malian Armed Forces,support to the G5 Sahel process, within the activities of EUTM Mali in support of the Malian Armed Forces, by contributing to enhancing coordination and interoperability within the G5 Sahel national armed forces. The Azerbaijani Armed Forces (Azerbaijani: "Azərbaycan Silahlı Qüvvələri" ) were re-established according to the Law of the Republic of Azerbaijan on the Armed Forces from 9 October 1991.  The Azerbaijan Democratic Republic (ADR) had originally formed its own armed forces from 26 June 1918.  However these were dissolved after Azerbaijan was absorbed into the Soviet Union as the Azerbaijan Soviet Socialist Republic from 28 April 1920.  After the Soviet Union dissolved in 1991–92 the armed forces were reformed based on Soviet bases and equipment left on Azeri soil. The Indian Armed Forces (: "Bhāratīya Saśastra Senāeṃ") are the military forces of the Republic of India.  It consists of three professional uniformed services: the Indian Army, Indian Navy, and Indian Air Force.  Additionally, the Indian Armed Forces are supported by the Indian Coast Guard and paramilitary organisations (Assam Rifles, and Special Frontier Force) and various inter-service commands and institutions such as the Strategic Forces Command, the Andaman and Nicobar Command and the Integrated Defence Staff.  The President of India is the Supreme Commander of the Indian Armed Forces.  The Indian Armed Forces are under the management of the Ministry of Defence (MoD) of the Government of India.  With strength of over 1.4 million active personnel, it is the world's 2nd largest military force and has the world's largest volunteer army.  It is important to note that the Central Armed Police Forces, which are commonly and incorrectly referred to as 'Paramilitary Forces', are headed by officers from the Indian Police Service and are under the control of the Ministry of Home Affairs, not the Ministry of Defence. Stefan Mokrzecki of Ostoja coat of arms (1862–1932) was a general in the Russian Army and the Polish Army.  During Polish-Soviet War commanded 8 DP and other units.  Later member of armed forces of Republic of Central Lithuania.  Retired in 1925.  He was brother of Adam Mokrzecki that also was a general in Russian army to end as general of Polish army. The Sudanese Armed Forces (SAF) are the Armed Forces of the Republic of Sudan.  According to 2011 IISS estimates, it numbers 109,300 personnel.  They comprises Land Forces, the Sudanese Navy, the Sudanese Air Force, and the Popular Defence Forces.  They also previously had Joint Integrated Units formed together with its rebel enemies the Sudan People's Liberation Army.  The Armed Forces operate under the authority of the People's Armed Forces Act 1986.  In 1991, the Library of Congress used the term "Sudan People's Armed Forces" to refer to the entire armed forces, but by the late 2000s (decade), the "Sudanese Armed Forces" term was most widespread.  In 2004, the Federal Research Division of the Library of Congress estimated that the Popular Defence Forces, the military wing of the National Islamic Front, consists of 10,000 active members, with 85,000 reserves.  It has been deployed alongside regular army units against various rebel groups. The Republic of Central Lithuania or Middle Lithuania (Polish: "Republika Litwy Środkowej" , Lithuanian: "Vidurio Lietuvos Respublika" , Belarusian: Рэспубліка Сярэдняе Літвы / "Respublika Siaredniaje Litvy" ), or Central Lithuania (Polish: "Litwa Środkowa" , Lithuanian: "Vidurio Lietuva" or "Vidurinė Lietuva" , Belarusian: Сярэдняя Літва / "Siaredniaja Litva" ), was a short-lived political entity, which did not gain international recognition.  The republic was created in 1920 following the staged rebellion of soldiers of the 1st Lithuanian–Belarusian Infantry Division of the Polish Army under Lucjan Żeligowski, supported by the Polish air force, cavalry and artillery.  Centered on the historical capital of the Grand Duchy of Lithuania, Vilna (Lithuanian: "Vilnius" , Polish: "Wilno" ), for eighteen months the entity served as a buffer state between Poland, upon which it depended, and Lithuania, which claimed the area.  After a variety of delays, a disputed election took place on January 8, 1922, and the territory was annexed to Poland. The Republic of Korea Armed Forces (Korean: 대한민국 국군 ; Hanja: 大韓民國國軍; Revised Romanization: "Daehanminguk Gukgun", literally "Great Korean Republic National Military") are also known as the ROK Armed Forces, are the armed forces of South Korea.  Created in 1948, following the division of Korea, the Republic of Korea Armed Forces is one of the largest standing armed forces in the world with a reported personnel strength of 3,725,000 in 2016 (625,000 active and 3,100,000 reserve).  The ROK military forces are responsible for maintaining the sovereignty and territorial integrity of the republic, but often engage in humanitarian and disaster-relief efforts nationwide.  More recently the ROK military began increasing its participation in international affairs, acknowledging its role and responsibility as the eleventh economic power in the world in terms of GDP.  The ROK military has participated in various peacekeeping operations, and counter-terrorism operations.  It is recognized as one of the world and Asia's most professional militaries. The Serbian Armed Forces (Serbian: Војска Србије / "Vojska Srbije" ) are the armed forces of Serbia.  The armed forces consist of the Serbian Army and the Serbian Air Force and Air Defence.  The Commander-in-Chief of the armed forces is the President of the Republic.  The Serbian Armed Forces are a professional and volunteer based military.  Serbia exercises civilian control of the military through the Ministry of Defence.
Answer: The Republic of Central Lithuania