January 25, 1953 on all fronts began the fourth winter offensive of the combined forces of the United Nations and the Republic of Korea. As the main problem raised output to the line Nampo-Pyongyang-Wonsan, t. F. The promotion of inland North Korean territory at a distance of about 200 kilometers. But this approach also did not bring the expected results. On the contrary, in May 1953 The north side has taken a series of counter-offensives, mainly in the eastern part of the front, in Pukhangan river and in its central part. There are up to three offensives combined North Korean and Chinese troops, which unfolded from May 1st (the start date noted as 13 or 27 May) to 27 July (point 13 and 15 July as the North Korean offensive end time). It should be noted that for the first time in a long time offensive operations undertaken by the North side were quite successful and prompted both warring parties for an early conclusion of the armistice agreement.