In August 1939, just weeks before Hitler and Stalin invaded Poland, the Soviet Union and Japan fought a massive tank battle at Khalkhin-Gol on the Mongolian border. It was the largest armoured battle in the world up to that point. Khalkhin-Gol, which was a series of engagements, dramatically changed the course of WW II – and history. The main significance was that it made the Imperial Japanese Command totally reconsider a northern expansion into Eurasia and to develop a new policy leading to the occupation of South East Asia and the attack on Pearl Harbour. It was also the first large-scale victory for General Zhukov, who was later to become the decisive commander in the Soviet Victory against Nazi Germany.

Many lives were lost at the battle. There was also a shortage of nurses and medics and Mongolia held a nationwide recruitment campaign. At the time, a 15 year-old Mongolian girl from Dornod province volunteered and urged other girls to join her. Ts.Chimedtseren was one of 16 brave girls who voluntarily worked under enemy fire as a nurse during the battle.

Ts.Chimedtseren was born in 1924 in Khentii province. She lost her mother when she was 6 years old. When she was 15, she volunteered to go to Khalkhin-Gol without permission of her father. She had been working since 12 year-old because she could read and write.

Ts.Chimedtseren was awarded the Mongolian Labour Medal in 2014 by decree of former Mongolian President Ts.Elbegdorj on the  occasion of the celebration of the 75^th anniversary of the Battles of Khalkhin Gol.