First of all, it is clear that 30,000 to 120,000 is the caliber of propaganda, and the standard used is to calculate the strength of our army, and only the strength of our field army before the start of the war, while the calculation of the enemy's strength is to calculate the total strength of the five integrated divisions that participated in the Soviet-Chinese campaign before and after.
As everyone knows, our army fought on the inside line in the Soviet-Chinese campaign, and the advantage of the inside line operation was that in addition to the field army, our army had a huge number of local armed forces and militias, which was the source of our field army's replenishment of troops, while the enemy army would not be replenished by the localities and could only fight with its inherent strength, so there was no problem with the total strength of the enemy's army being 120,000, but it was a big problem for our army to count 30,000 troops.
In fact, the 1st and 6th divisions rested and replenished after two battles, and the strength of the two divisions increased to 30,000, and by the end of August, the strength of the two divisions had increased to 320,000 (Su Yu report), the leather brigade also reached the central Soviet Union, and the additional 1,000 troops were used as a reserve for 5,000. Other participants in the Soviet-Chinese campaign include the 7th Column (6,000), the 10th Column (about 6,000), the 5th Brigade (6,000), the Central China Military Region Special Service Regiment and 3 local regiments (about 5,000).
Moreover, it is problematic to combine the seven battles and seven victories of the Soviet Union and China into one campaign, because these seven battles are not seven highly related operations in a plan, and the combination of the seven wars into one campaign is, to put it bluntly, to make the data look good, plus the statistical caliber to make some articles, it becomes 30,000 to 120,000, and the synthesis also uses two standards, only the 7 battles won are synthesized, and the 8th battle that has been defeated is cut off to besiege Hai'an. All this fully shows that the synthesis of the Soviet-Chinese campaign at that time was a propaganda need, and if it is still said that the Soviet-Chinese campaign is 30,000 against 120,000 and seven battles and seven victories, it is the need to support the god of war.
References: "Selected Writings of Su Yu" and "History of the Third Field Army".
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Su Yu, the god of war