grumbler -> (10/3/2001 6:13:00 AM)
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quote:
Originally posted by TIMJOT:
The Japanese had available for these operations 3 divisions under Homma, 4 under Yamashita, one under Iida, and 2 under Imamura. Imamura had to be reinforced from Homma for his plan to work. Thus, the Japanese were spread too thinly for simultaneous attacks on all their targets. Some prioritization had to occur. The decision was made, rightly in my opinion, that the PI had to be neutralized before the attack on the DEI could occur. Thus, there was no reserve of forces just waiting to attack the PI while the DEI and Malaya were conquered.
Now, if as you suggest the US delays declaring war, then I agree things get more difficult for the Japanese, but not immpossible. First the US would probably have to wait unitil April at the ealiest, becuase MacArthur had said it would take until then before the PI could be ready. By then the 4 divisions used in Malaya and 2 divisions used in DEI would be available suppliment Homa's original invasion force of 2 divisions. For a total of 8 Divisions that could be brought to bare against the PI. More than enough even for a reinforced PI. Thats not even counting the two divisions used for the Burma campaign. So no, they would not need to cancel that operation. You also have to remember due to its location, even a reinforced PI is easily cutoff and isolated.
The Japanese used more than two divisions in Burma. Initially, it is true, that only 33rd and 55th divisions were deployed, and they were successful, by late February, in taking Rangoon. However, the Japanese had to reinforce 15th army with the equivelent of three more divisions, 18th, 56th, and tank units, plus over 400 aircraft, before they were ready for the decisive campaign in central and northern Burma. These units would not have been available for Burma had they been sent to the PI.
However, the Japanese could, as you suggest, muster up to eight divisions to attack the PI (if, of course, no garrison forces of divisional strength were needed in Malaya or the DEI, which was not the case in reality). However, these forces could not have been lifted simultaneously, so they would have to attack in some sort of sequential order. While I doubt that the decision on when to declare war would be exclusively based on MacArthur's ideas of what "ready" meant, it is probably not unreasonable to assume, as you do, that a 5-6 month wait would be undertaken in order to reinforce the PI and (especially) the LOC to the PI.
Certainly the japanese would be in no position to force the issue before mid-April anyway, as it would take some time to reconcentrate their forces from the DEI and Malaya. A US declaration of war in, say, mid-February would screw the japanese completely, with their forces well-committed to the south and suddenly out of supply. However, we will assume the rosiest possible picture for the Japanese, which is that the US would time their DoW to coincide with the completion of the Japanese conquests in the south.
In that case, the garrison of the Pi could easily have included several additional US Army divisions, plus the 11 divisions in the PI. Since the japanese were limited in the available invasion sites on Luzon, this would have made their task quite difficult. Far more so than was the historical case, certainly, especially as the air would be contested.
quote:
Come to think of it, this scenerio could solve the IJN main delema and the reason Yamamoto originally proposed the PH attack. Which was that the IJN long held plan of luring the USN to a decisive battle somewhere around the PI was flawed becuase there was no way to be sure the USN would sail to relieve the PI. Under this scenerio however, after the US spent months massively reinforceing the PI with men and material it would be unthinkable to leave it to its fate. The USN would be forced to run the guantlet and come to the rescue. The IJN would then get what it always wanted a decisive naval battle in the place and time of its chooseing. I dare say owing to its weaknesses in early 42 the USN would be instore for a much more greater defeat than it recieved at PH. Such a defeat in a less than wholeheartedly supported war, could very well bring the US to the negotiating table. Just my opinion.
Actually, this would model far more the US concept of the decisive battle than the Japanese one. The US would be arriving via the Central Pacific rather than via the Gilberts and Marshalls. They would thus avoid the guantlet of japanese air attacks. Meanwhile, Manila would be supporting a vast array of submarines, which would make life quite difficult for the japanese transport forces (and the poor merships trying to get those vital resources back to Japan). With aerial reconnaisance the subs could prove to be quite deadly, poor torpedoes or not.
I think that you are corect in assuming, however, that the Japanese would eventually win the Battle of the Philippines. they would simply be better prepared to take advantages of any vagaries of fortune, since the campaign would be fought in closer proximity to Japan than the US. However, it would be a long and gruelling campaign, and would probably finish with an exhausted Japanese military (as well as an exhausted American one). Time would, moreover, be on the side of the Americans, and the road to Tokyo would be a shorter one, as Guam and Wake would still be held (and the Japanese mandate islands much more trashed than was historically the case, as they would just have had a major batle fought over and near them). If the japanese were lucky enough to inflict losses of 3-1 in this campaign, this would still be significantly to the japanese disadvantage. By the end of 1943, the Japanese would still be significantly outnumbered at sea. Further, the US public would have been gripped by the tales of the defense of the PI, much as they were historically by Guadlacanal, and I think that a US loss in the PI would not be the end of the war by any stretch of the imagination, even if the bulk of the USN were lost there.
However, this does not take into account the impact of no American entry until 1942 on the resistance of the other allies in the area. Perhaps Malaya and the DEI would fall sooner if the USA was not on their side when they faced their final challenges. For those reasons, as wel as domestic politics, I think the US delaying a DoW is not likely.
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