30th September – 21st December 1943 – Thailand – Part III – The Drive to Bangkok
The renewed British assault was launched on the 17th of November, codenamed Operation Pavilion, and this time it was Slim’s forces that struck first, looking to catch the Japanese off balance as they tried to allocate their resources between the two axes of attack. In this the plan worked as intended, and by the 20th of November the reinforced 10th Indian Infantry punched a hole through the thin layers of the Japanese lines at Ban Phaet allowing follow up units, including light armour from 1st Cavalry, to push through and attack the Japanese rear. What followed was days of increasingly confused fighting ranging from small scale skirmishes to pitched battles against isolated Japanese positions. By the 29th of November the Japanese had managed to disengage, at least temporarily and again this was not because of any tactical successes on their part, but the difficulties of resupplying the leading elements of the advancing British forces. If the Japanese expected Slim to call another extended halt to regroup, they were sorely disappointed. The British advance halted only long enough for reserve formations to pass through and take up the task of leading the attack, and they resumed their advance on the 2nd of December [1].
The fresh attack from the south began on the 20th of November and despite the Japanese putting the bulk of what fresh reserves and equipment they had facing the British on this front, concentrated at Bang Nong Hin they fared every bit as badly as those who had been facing Slim’s forces moving from the north. The Japanese had in a typically unrealistic fashion assembled a force intended to carry out a counterattack. This was technically of division strength, in practice it consisted of several infantry regiment brought up to strength by disbanding several other units, supported by a small armoured force. This consisted of less than twenty vehicles, including two M3 Stuarts and a Cruiser IV in their ranks. The exact circumstances in which the British tanks were captured is uncertain, but the best estimate is that some enthusiastic tanks crews pushed too far forward and were unable to find their way back to British lines before they ran out of fuel. Regardless of their provenance the use of the captured tanks was hampered by Japanese crews who had little time to familiarize themselves with their operation, and they were subject to the same chronic fuel shortages hampering all Japanese operations. This meant the Japanese armour was sent into battle with their fuel tanks barely half full, so barring a miraculous victory this would be a one-way trip and no such miracle was forthcoming. The counterattack on the 22nd of November swiftly broke down, with the tanks becoming detached from the supporting infantry and breaking up into several smaller groups that were either dispatched by the British or were left marooned and abandoned when they ran out of fuel. Such was the failure of this effort that it was only courtesy of intelligence information gathered after the battle that British realized that this had been intended as co-ordinated counteroffensive rather than a series of small-scale local skirmishes [2].
Even as the Japanese ‘forlorn hope’ was being carried out the leading elements of IX Corps, with the Canadian Brigade now in support rapidly broke through towards the western flank of the Japanese position and on the 24th XXXIII Indian repeated this to the east, exposing the Japanese forces to the risk of encirclement. It was here that that the Japanese reserves might have proven useful in holding open the line of retreat, even if only for a few more hours. As it was the Japanese units in the front line faced a choice between a retreat bordering on a rout or digging in and fighting to the bitter end. The fact that so many chose to retreat was a sign of how poor morale was among the Japanese was. Exhortations to fight and die in the name of the emperor sounded increasingly hollow, especially when so many of the officers issuing these demands were far from the frontlines, for the time being at least [3].
The truth was that whatever sacrifices the Japanese troops were, or were not, prepared to make the British advance towards Bangkok was inexorable and it was obvious to everyone in the Japanese high command that an assault on the city was simply a matter of time. Colonel Tsuji had returned to Bangkok to stiffen the spirit of the troops charged with the defence of Thailand; his patrons having obtained him this opportunity to return to the front in an effort to rehabilitate his reputation and he taken the opportunity eagerly, still being certain that the moral superiority of the Japanese could overcome British numbers, especially as the British were so dependent on ‘sepoys’ to do their fighting for them. He now called for a street by street, house by house defence, bleeding the British forces for every inch of ground they took, and if this defence could not hold the city, then the enemy would be left in possession of a ruin that would be nothing but a burden to them. It was a bleak plan, but one that met with little opposition in Japanese ranks, unsurprisingly the Thais were a different matter [4].
The Japanese had ruthlessly repressed the small-scale insurrections in the aftermath of Operation Buttermere, but this success had left them somewhat complacent, seeing this through the lens of their own sense of racial superiority and convincing themselves that they had crushed the spirit of the Thais once and for all, Tsuji certainly wasn’t interested in hearing any contrary opinions. The truth was that many eager to resist the Japanese had correctly judged that the time had not been right for an uprising and had continued to plan and prepare quietly, while maintaining the same appearance of collaboration in public that allowed them to gather intelligence about the Japanese and prepare acts of sabotage that would undermine the defence of the city when the time came. This meant that the resistance was fully aware of Japanese plans and whatever divisions might have existed among the different groups they were all determined that the Japanese had to be prevented from destroying the city if it were humanly possible [5].
Some might still have harboured grudges over the fact that the British had not taken Thailand in 1942 when the Japanese were ‘on their knees’, but most of them had been persuaded of the value of establishing contact with the British, especially if they wanted to acquire weapons of their own with which to fight the Japanese. On the 8th of December the first acts of sabotage took place, along with attacks on Japanese troops in the city. Official Thai histories suggest this date was deliberately chosen as it marked the anniversary of the Japanese invasion, but it seems more likely that tensions simply boiled over and those looking to conduct an organized resistance had little choice but to follow. Thus, before the Japanese could respond to the trickle of attacks on the 8th they were inundated on the 9th as the city erupted. Communications were shutdown, barricades raised, bombs thrown and assassinations carried out, temporarily paralysing the Japanese response and effectively disrupting the flow of information to and from the hastily assembled lines of defence set up to slow the British drive on the city, meaning they were unaware that at dawn that day both Slim and Montgomery had unleashed their forces in a final drive to breakthrough to the city and by the 10th those lines of defence had collapsed entirely, with Japanese units trying to execute their orders to withdraw towards the city, only to find their movements blocked by Thai partisans and Chindits who had penetrated behind their lines [6].
Also on the 10th rioter threw open the gates main prison in Bangkok were thrown open, allowing the political prisoners held there to escape, alongside criminals of every type, creating a major headache for the British who had to round them up later. Some of these political prisoners were evacuated to public buildings now held by the rebels and those who had previously served in governing the city and the country were now pressganged into forming an interim administration, an ambitious undertaking given there was gunfire echoing through the streets and plumes of smoke rising from whichever buildings had caught fire in the last few hours. The city was in chaos, which at least ensured that that Japanese could not carry out their scorched earth policy, though this came at a considerable cost in Thai lives.
By the 13th the resistance in the city was running low on ammunition for its small arms and the Japanese were finally beginning to impose some semblance of a strategy for dealing with them, looking to isolate one district of the city at a time and clear it of resistance. However, just before nightfall a small group of tanks pushed into the suburbs Bangkok. A Japanese platoon preparing to attack a resistance strongpoint moved out to meet them, failing to recognize the pennants flying from the vehicles in the gloom of twilight until it was far too late, and they were almost completely wiped out before they realized their error. These tanks were the vanguard of 1st Cavalry, and their probe was swiftly reinforced. The lead elements of 70th Infantry Division entered the city early on the 14th and further elements of IX Corps and XXXIII Indian Corps soon followed, steadily pinning the Japanese between their own advance and the Thai resistance, swiftly reducing the Japanese defenders to a handful of isolated pockets, contained and unable to carry out their planned devastation of the city. There had certainly been many casualties among the Thais and parts of the city had been badly damaged, but it fell far short of Tsuji’s demand for only ashes and rubble to remain. Tsuji himself paid the ultimate price for his failure, assassinated by a Thai insurgent while trying to flee the city [7].
The most awkward moment in the liberation of Bangkok arose from the question of who was in charge of the city. There was more than one group claiming to represent the people and some of those groups were not supporters of the previous government of Thailand. The need to focus on clearing out the last of the Japanese forces persuaded the Thai factions to accept a temporary military governor taking charge, postponing the arguments among the Thais over running the city, and the country, until after the new year, though in fact the British found themselves running the city until the middle of March 1944. Bangkok was finally declared secure on the 18th of December and Operation Pavilion ended three days later.
The fall of Bangkok was huge blow to the Japanese. Not only had they suffered irreplaceable losses but the British advance up the Malayan Peninsula also exposed Indochina to attack from land and sea, a situation that the French were eager to exploit, though the British were content to follow a more methodical approach and would not support a fresh offensive until the spring of 1944. The Japanese position in South East Asia and the Pacific had taken a massive turn for the worse in the latter half of 1943 and there was no prospect of the situation improving in the following year, the Japanese Home Islands would find themselves on the frontlines of the war soon enough [8].
[1] The Japanese are having to cover too much ground with too few troops, an issue they face OTL as well, but obviously things are going from bad to worse much sooner here.
[2] This won’t stop the Japanese presenting this debacle as a heroic act of self-sacrifice to their own forces.
[3] Tired and hungry soldiers who’ve been in the lines without relief for months on end are proving increasingly immune to calls to patriotism.
[4] It’s a lesson some many occupying armies fail to learn, when you threaten to destroy everything the people you are oppressing have nothing to lose by fighting back.
[5] If the Japanese had every been remotely serious about ‘Asia for the Asians’ the colonial powers would have been in a lot of trouble, as it is the British are the beneficiaries, whatever the Thais might think of them.
[6] The Japanese are facing what the Germans did in Paris and will again, in a city to be discussed later.
[7] A more appropriate fate for Tsuji than OTL where he got off scot free for his actions during the war.
[8] We will be heading for completely new territory in Asia in 1944, including Indochina and Hong Kong.