There were plenty of hard fighting by the Chinese even at the start of the war.
https://en.wikipedia.org/wiki/Yan_Xishan#Early_campaigns
Early Japanese tank advantage was a significant factor for why many early cities were overrun. There were accounts of chinese trench lines being run over by Japanese tanks with no weapons on the chinese side that could penetrate the tanks. The battle of shanghai failed similarly because the chinese did not have equipment to dislodge Japanese tanks. In addition the shock factor of Jiang's best German trained troops being unable to defeat a small contingent of tanks (a dozen or so) severely impacted the army (you could say the army shattered). Imagine being on the front and hearing the army's
best divisions could not defeat less than a dozen tanks. After some fighting against tanks, the Chinese discovered grenades/dynamite placed under the tank could destroy them, and better equipment arrived that could destroy tanks, which made this advantage only be relevant at the start of the war. In addition supplying tanks in mountainous terrain was difficult for Japan.
Shandong troops fled without fighting due to psychological reasons as well as covert reasons (the governor was communicating with the Japanese and considered turning coat). Jiang even gave the troops extra resources to hold the line but the troops fled at the order of the governor who wanted to turncoat. Thus Shandong fell not because the Japanese army was better.
If paradox wants to implement warlords collaborating with Japan, add a clique for Shangdong and have them turncoat.
"Because tanks" isn't the reason why the Chinese collapsed, or didn't even fight, in so many early battles, nor was it the reason why they lost the battle of Shanghai. Indeed Beijing was captured by a single infantry division and some independent brigades (no tank formations), and the Shanghai battle was lost ultimately because the Chinese were outflanked by amphibious landings and had no heavy weapons that could penetrate the Japanese bunkers during the initial stage of the battle when throwing the Japanese out of Shanghai might have been possible.
Nor, by the way, is "because traitors". Yes, the governor of Shangdong retreated from most of the province without a fight, but he was only doing the same thing that commanders in Beijing and Tianjin were doing. He was the one who, when being taken away to be executed, said that he would pay for losing Shandong but asked who would pay for losing Nanjing.
Poor equipment, poor training, poor morale, poor tactics, and poor leadership were the primary reasons. The Chinese lack of artillery, machine guns, and other modern weaponry is well known, though they were very well supplied with grenades (which were a serviceable weapon against light Japanese tanks). Their tactics were based on Qing-era manuals which had been only marginally updated to accommodate the teachings of WW1 - this was where there was any real training at all. CKS had the same failings of another militaristic dictator - insistence on micro-management - but in a system where he was not guaranteed to be obeyed.
The Japanese tried to take more cities numerous times past 1940 and they were stopped or taken at severe cost. I do agree that there was nothing advantageous for them to gain by occupying the countryside. However they still wanted to advance to capture cities because they felt doing so would knock China out of the war. This is similar to their misguided idea that attacking Pearl Harbor would knock the US out of the war. China at the time had 90%+ of the population in the rural areas. Taking the cities would not have knocked China out of the war even if the cities were under collaborationist control simply as they would have control over less of 10% of the population. Collaborationist armies were ineffective, demoralized, and frequently surrendered to partisan regiments that were 10x smaller than the collaborationist force.
See Siege of Changsha 1, 2, 3 and 4, Wuhan, 1939 Counteroffensive, Shanggao
Sorry, but this is wrong.
The Wuhan battle took place before 1940. The 1939 counteroffensive was a disaster and obviously took place before 1940. The Changsha battles before 1943 were so-called "cut-short" offensives (i.e., offensives directed to disrupting Chinese offensives and not specifically directed to capturing the city). Whilst the Japanese obviously wouldn't have been sorry to have taken Changsha, this was not the reason for their offensive, nor is the failure to capture Changsha evidence of a fierce Chinese resistance (more Japanese arrogance in getting ambushed as they did). Shanggao was also a "cut-short" offensive.
For a true appreciation of what happened when the Japanese set out to capture territory post-1940, we have to consider the one offensive where they really aimed to do so: Operation Ichi-Go, where the Japanese captured all their objectives despite facing fierce resistance at Hengyang.
Ichi-go also largely failed to achieve it's objective.
Strategically, yes (but not because of anything the Chinese did). Tactically, no.
The Japanese took the airfields they aimed to take, and opened the corridor they sought to open. In the end this didn't matter because The US capture of the Marianas meant that air bases in China were no longer needed. Similarly the opening of the corridor didn't really matter as the shipping needed to complete the route at the Japanese end was no longer available, having been sunk by the US navy.
The reason was Japan was already spread too thin. In addition even if they did manage to capture a few cities, it would not have ended the insurgency. The misconception many people have is taking Japan's rationale for Ichi-go at face value. The Japanese felt capturing a few cities would knock the Chinese out of the war.
I base my views on the historical record. Whilst there certainly were people with that view (i.e., losing a few more cities would end the war in China) in the Japanese army they had not been listened to up until that point, nor does the offensive they actually undertook make any sense if that's what they were trying to do (why aim for secondary cities that just happen to be in a line across China if your goal isn't to open a corridor across China?).
I think the Chinese theater is better compared to the Soviet theater where instead of 'russian' winter, it's logistics that makes things worse and worse for Japan (although logistics is also a part of why Germany's advance lost steam).
The Germans went all-out to take Moscow and failed, surrounded Leningrad for years but failed to take the city, assaulted into Stalingrad and were surrounded there. The Germans deployed the main part of their army against the Soviet Union for the entire length of their campaign there - more than 100 divisions including elite units. Sure the winter of 1941 was bad for the Germans because they were unprepared for it, but ultimately it was Russian resistance that stopped them.
By contrast in 1937-40 Nanjing, Beijing, Guangzhou, Shanghai, Tianjin, Wuhan were all taken by the Japanese, some with serious resistance, others basically without a shot. The Japanese deployed only a third of their army there even at peak strength, and many of these were the lower-quality "guard" divisions. For most of the war their main strength wasn't even deployed at the front (e.g., the Japanese 11th Army, their main offensive force in China). When the Japanese wanted to undertake a massive offensive in China, they could and did.
Even in one of the worst defeats the Soviets suffered in 1941, the battle for Kiev, Axis forces still suffered 45,000 casualties. Compare this to the insignificant casualties suffered by the Japanese in taking Beijing, or even the fairly minimal ones suffered in the fighting for Nanjing (~7k KIA and WIA).
If the Russians had fought like the Chinese did, they would have lost Moscow, Stalingrad, and Leningrad in 1941-42 and then treated beyond the Urals to fight from there.
The equipment improvements on the Chinese side is also a factor.
At the end of the war the Chinese were producing much the same weapons that they had at its beginning. The difference here was lend-lease from the USSR in before 1942 and from the US thereafter (if you exclude the aid that was delivered in 1945 - after the main danger had passed for China - the amount of assistance was the same, though the Soviet assistance is less publicised).
I'm of the opinion that Japan is on the contrary too powerful in Paradox games vis-a-vis real life.
If the game is out of whack, it's because people keep insisting that there be a balance between China and Japan such that the war there becomes a stalemate. The result is that Japan has to be capable of keeping 100+ divisions fighting in China AND carrying out the Pacific/South-East Asia invasions. Historically Japan just didn't need that kind of force to do what it did in China - a few dozen divisions and independent brigade formations were sufficient.
There were specific reasons why they were able to overrun China early on that stopped being true.
In the contrary, whilst morale improved (and then declined) the poor weapons, poor equipment, poor tactics, and poor leadership were generally true (with some obvious exceptions) throughout the war. You're obviously correct that when the war got away from the coast part of the Japanese advantage (naval) disappeared, and infrastructure was also obviously an issue, but infrastructure was also a major issue for the Chinese (particularly after the fall of Yichang).
Incidentally, some of the poor tactics we are talking about here were still evident even in the Korean war - British officers commented that even in the heaviest fighting of WW2 they had never seen Axis troop bunch together the way Chinese troops did - though obviously the Communist Chinese troops in Korea were much better trained, led, and even equipped than the Nationalist troops of WW2.
The big difference post 1940 is that the Japanese pursued a policy of winning a political victory in China and lost interest in fighting in China over what was seen as the great opportunity of conquests in the Pacific and South-East Asia.
The war became a stalemate.
A political stalemate, not really a military one. Modelling it as a military one results in the problems we see with China in every HOI game (except possibly HOI3:TFH which had a "seize the coast" event which, whilst horrid, was at least a closer approximation to what really happened than China being annexed in 1938 as in most games where the player controls Japan).
I will also reiterate that the reason why Japan didn't send more troops to China was because they economically (in terms of cost-benefit) could not do so, not only from a supplies perspective but also from a wages perspective.
This literally makes no sense. Japan had the troops available - we can see this from the fact that only roughly 1/3rd of the Japanese army was there at peak strength. Or are you using the fact that Japan did not fully mobilise to fight the war in China as evidence that they were heavily engaged there? Logically, what this shows is that Japan was not fully engaged there. Later, once the Pacific War had begun, the Japanese did fully mobilise.
Japan sent out troops to the pacific to acquire war resources for their industry they desperately needed, and they did so by hollowing out their Manchurian garrison.
Japan started sending troops from Manchuria AND China to other theatres after the outbreak of war, but all this shows is that they were not seen as needed there.
Japan was bleeding equipment in China just trying to maintain the status quo. They were bleeding equipment whenever they lost a fight to the Nationalists. The collaborationist government was bleeding equipment to partisans. Their supply lines were being raided by partisans. Enough equipment was captured in the totality of the war to arm 500,000 partisans in northeastern china alone that formed the backbone of the Communist army in the civil war. None of this is true in game.
Obviously partisan warfare needs modelling better, but again, "bleeding equipment" is something of an exaggeration - there were losses in anti-partisan operations but the ratio was often 10 or 20 to 1. The ~800,000-strong collaborationist army is certainly proof of something, but possibly not that the war in China was a gruelling one for the Japanese!
PS - Wiki is a great source when nothing better is available, but the following books cover the war in far more detail than you can get from Wiki and are the source for all of the above points:
- The Battle for China: Essays on the Military History of the Sino-Japanese War of 1937-1945. This is a great source, particularly on Ichi-Go and the Japanese war strategy, and benefits particularly from input from Japanese, Chinese, and US/European historians.
- China at War: Triumph and Tragedy in the Emergence of the New China 1937-1952. Good particularly for understanding relative strengths of the two sides at the beginning of the war.
- Shanghai 1937: Stalingrad on the Yangtze. You've probably seen this book mentioned here before but its good especially for the portrait it draws of the average Chinese soldier.
I've tried reading Chinese language sources on the war in the past but they're normally pretty propaganda-tastic (the martial-law-era Taiwanese stuff particularly so, as anyone who has visited the CKS memorial in Taipei will know).