Zhucheng Campaign

The Zhucheng Campaign (诸城战役) was a campaign fought in Shandong, and it was a clash between the communists and the former nationalists turned Japanese puppet regime force who rejoined the nationalists after World War II. The battle was one of the Chinese Civil War in the immediate post World War II era, and resulted in communist victory.
Prelude.
Like other similar clashes immediately after the end of World War II between the communists and the nationalists in China, this conflict also rooted from the fact that Chiang Kai-shek had realized that his nationalist regime simply had neither the sufficient troops nor enough transportation assets to deploy his troops into the Japanese-occupied regions of China. Unwilling to let the communists who had already dominated most of the rural regions in China to further expand their territories by accepting the Japanese surrender and thus would consequently control the Japanese occupied regions, Chiang Kai-shek ordered the Japanese and their turncoat Chinese puppet regime not to surrender to the communists and kept their fighting capabilities to "maintain order" in the Japanese occupied regions, fighting off the communists as necessary, until the final arrivals and completion of the deployment of the nationalist troops. As a result, most members of the Japanese puppet regimes and their military forces rejoined the nationalists.
However, most of these former nationalists turned Japanese puppet regime forces were not from Chiang Kai-shek's own clique, but instead, they were mainly consisted of troops of warlords who were only nominally under the Chiang Kai-shek's before World War II, since they were nationalists in name only and mostly maintained their independent and semi-independent status. These warlords were only interested in keeping their own power and defected to the Japanese side when Japanese invaders offered to let them keep their power in exchange for their collaborations. After World War II, these forces of former Japanese puppet regimes once again returned to the nationalist camp for the same reason they defected to the Japanese invaders. Obviously, it was difficult for Chiang to immediately get rid of these warlords for good as soon as they surrendered to Chiang and rejoined nationalists, because such move would alienate other factions within the nationalist ranks, and these former Japanese puppet regime's warlords could still help the nationalists to gain more territories by holding on to what was under their control until Chiang completed the deployment of his own troops to take over. Chiang Kai-shek's objective was to simultaneously solve the warlord problem that had plagued China for so long and the problem of the extermination of communism, which proved to be a fatal mistake for him and his nationalist regime later on, as shown in this conflict.
Nationalist strategy.
In accordance with his strategy to simultaneously solve the warlord problem that had plagued China for so long and the problem of the extermination of communism together, Chiang Kai-shek and his followers had hoped that these former Japanese puppet regime's warlords who rejoined the nationalists would be able to hold on to the regions long enough for Chiang to deploy his own troops by holding off communists. If the communists were victorious in such conflicts, however, the result would still benefit to Chiang and China because the power of these warlords would be reduced as their military forces were smashed by the communists, and the warlord problem plagued China for so long could thus be greatly reduced, while at the same time, communists would be weakened by the fights and Chiang's own troops would have easier time to take control.
For the former nationalist turned Japanese puppet regime forces, these warlords and their troops had no problem of following Chiang Kai-shek's orders, and they were eager to prove themselves. These warlords and their troops were well aware that due to the collaboration with the Japanese invaders during the Second Sino-Japanese War, they were well hated by the general population in China, including those nationalists who refused to surrender to the enemy and fought the enemy until the eventual victory. Therefore, in the impending demilitarization after World War II, they were certainly be disarmed and discharged, which would probably be the best outcome and the power of these warlord would be reduced or even completely eliminated as a result. Chiang Kai-shek's ordering them not surrendering to the communists and fighting off the communists was a savior for them because by carrying out such orders, these warlords and their troops could legitimize themselves and thus retain their power by fighting the communists who were targeted as rebels by Chiang Kai-shek and his nationalist regime.
Communist strategy.
The communist strategy was much simpler than that of the nationalists because there was not any huge division within the communist rank like that of the nationalist. The communists already earned considerable popular support by being the only Chinese force left in the region fighting the Japanese invaders and their puppet regime after the nationalist withdrew, and after successfully establishing communist bases in the rural regions where better life was provided to the general populace in comparison to that of Japanese occupied regions, the general Chinese populace agreed that the communists were well deserved to represent the China to accept the invaders' surrender in the region and takeover the regions occupied by the invaders.
Order of battle.
Nationalist order of battle.
Jiao (胶) County – Gaomi – Zhucheng Coastal Defense Army (of Shandong Province) under the command of Zhang Buyun (张步云), totaling around 20,000 troops:
Communist order of battle.
1st Division of the Binhai (滨海) Military Region under the command of Liang Xingchu (梁兴初), totaling around 7,000 troops.
Campaign.
In late August 1945, the communist launched their general counteroffensive in Shandong against the Japanese and their Chinese puppet regime force. Communist force rapidly threatened the Jiaoji Railway and Japanese strongholds around Zhucheng were isolated. On 5 September 1945, Japanese force withdrew to Gaomi, and most of strongholds were defended by the former nationalists turned Japanese puppet regime force under the command of Zhang Buyun (张步云), who rejoined the nationalists refused to surrender to the communists. Communists, in turn, decided to take the region by force.
The defenders were scattered in different locations so the communists concentrated their force by massing a single division and attacked the isolated outposts on the very same day the Japanese troops retreated. Although the defenders enjoyed the overall numerical superiority, their morale was extremely low and the sparsely stationed garrisons had no advantage when facing the attacking enemy who enjoyed local numerical superiority, so when the communist attack begun, nearly all of the garrisons abandoned their posts and fled to the safety behind the city wall of Zhucheng. As a result, most of the region had fallen into the communist hands within a single night after continuous communist assaults. By the early morning of 6 September 1945, the eastern and western passes of Zhucheng were firmly in the attackers' hands and the attackers demanded the defenders to surrender. After the defenders refused to surrender, the communists launched their general assault at 7:00 PM and after suffering a mere several hundred fatalities, the defenders' morale completely collapsed and everyone abandoned their post and fled. The commander in charge of defense, Zhang Buyun (张步云) was unable to control the situation and was forced to lead his remaining troops to retreat to Gaomi. By 8:15 PM, communists declared the town was secured after capturing over 2,100 defenders alive. Two days later, the garrison of Rizhao abandoned the city and the communist victory was completed. However, it must be said that the despite losing most of their territory, the defenders had successfully managed to keep most of their strength: they had only lost around 2,400 out of the original 20,000, and would continue to carry on the fight against the communists until June 1946.
Outcome.
Like other similar clashes immediately after the end of World War II between the communists and the nationalists in China, this conflict also showed that Chiang Kai-shek's attempt to simultaneously solve the warlord problem that had plagued China for so long and the problem of the extermination of communism together proved to be a fatal mistake. Although the result of the campaign turned out exactly like Chiang Kai-shek and his subordinates had predicted, and consequently the power of the warlords in this region was indeed reduced as their military forces were smashed by the communists, so that the warlord problem plagued China for so long was thus reduced for this particular region, and Chiang Kai-shek's secondary objective was achieved here, any positive gains obtained by the nationalists were negated by the politic fallout. The reason was that this success of achieving the secondary objective came at a huge cost in nationalists' loss of popular support in this region formerly dominated by the Japanese, because the local population had already blamed nationalists for losing the regions to the Japanese invaders, while reassigning these former Japanese puppet regime forces as the nationalist forces to fight the communists, the only Chinese force left in the regions, only further alienated the local populace and strengthened the popular resentment to Chiang Kai-shek and his nationalist regime.
The communists did not have the dilemmas faced by the nationalists and enjoyed popular support, and thus was able to easily overwhelm their nationalist adversary, and thus achieving victory without much difficulty. Like other similar clashes immediately after the end of World War II between the communists and the nationalists in China, the political gain was much greater than the military one for the communists as result of this battle.