parsifal
Colonel
But this leaves out a very major chapter of IJA history, its great successes against western Allied troops in the opening campaigns of the Pacific War through May 1942, when Japan captured territory over an enormous expanse in a short time. The IJA was aided in those campaigns by Japanese superiority in air and at sea, but also consistently defeated Allied armies with inferior (Japanese) numbers. Of course these Allied armies were far from the best the Allies fielded in WWII. The British Armies in Malaya and Burma were generally second-string collections of forces which could be spared by an already highly stretched British Empire; the 'US' force in the Philippines was mainly a still poorly trained Philippine National Army with US support and leadership; the Dutch Netherlands East Indies Army (KNIL) was already cut off from the German occupied Netherlands even before the Pacific War. However, the fact remains the IJA showed up very well against those Allied forces, and often defeated them with manuever. But even when frontal assault was used as a tactic, those Allied armies could not always stand up to it. Japanese infantry attacks were very fierce; they didn't only work against the Chinese.
IMO, it's partly leftover Allied propaganda from the WWII era which leads us to ignore or explain away the early IJA successes in relatively 'stand up fights' with numerically superior (though less well supplied) Allied armies, then overemphasizes IJA defeats in later Pac War battles where their position was entirely hopeless. It's true that some Japanese field commanders (as in the early attempts to retake G'canal) underestimated enemy strength and quality, but their own numbers and firepower were usually insufficient to overcome any competent enemy of such relative strength. Again, I think biased wartime accounts, and later first hand oriented accounts focused on honoring American servicemen, tend to blow out of proportion the importance of inferior IJA infantry tactics at G'canal. No army with the IJA's lack of numbers, weapons and supply at G'canal could have overcome any reasonably competent army possessing the positions, numbers, supply and weapons of the US Marine (later also US Army) defending force. The key to such campaigns was the air/sea struggle to reinforce and resupply the islands, which the Japanese lost at G'canal, and coudn't even contest in some later island campaigns.
Given the IJA performance v the Allies in Malaya, Burma, Philippines and DEI in 1941-42, they probably would have had overall qualitative superiority against the Soviets in the infantry-friendly terrain of Eastern Manchuria/Maritime Province as well. Red Army quality in '41 was very spotty, and the Soviets like the western Allies left relatively lower quality forces in the Far East.
Joe
Hi Joe
In fact i would extend this assessment to further than the first year of the war. On the ground, the US never got the better of the japanese man for man in jungle fighting. After the fighting around sanananda and Gona, the US only occasionaly engaged in deep penetration campaigns against the IJA in that terrain. The US contented itself with using massive amounts of firepower to take out key stongholds, generally airfields and port installations, and then leaving the remainder of the garrison to "wither on the vine". Thats code for not having the skills or the willingness to take casualties fighting battles against an enemy prepared to fight to the death in the trackless jungle.
In assessing IJA capabilities in the jungle, one has to be mindful of the acute disadavantages that they were forced to fight under for much of the war. I am not making exceuses fior the japanese when i say that...their leaders willingly embarked on a major campaign knowing the disadvantages they would be fighting under. Lacking proper heavy artillery support, virtually no airlift capability with little or no direct ground support from the air, uisually starving and often not even enough supplies to put boots on the soldiers (try walking in the jungle without boots sometime....its not pleasant), relatively lightly does not produce a balanced indication of IJA fighting capabilities. The US camapaigns across the pacific, including those that captured key bases in New Guinea, were not jungle campaigns and were not a balanced assessment of IJA fighting capabilities.
If you want to gauge actual combat effectivenes of the IJA, you have to search hard for what might be termed a level playing field. Perhaps the nearest might be the IJA counterattacks into the Arakan in Burna, or their defensive campaigns near Wau or later in the Finnisterre ranges against the australians. Yamashitas defensive campaign in the PI in 1944-5 might also be worth having a look at. none of these camapaigns are anything like a fair fight but they are at least more equal in terms of the firepower that could be brought to bear supporting the ground troops.
Saying the Japanese were not effective fighters is ultimately offensive to the allied soldiers who fought them. If they were so weak, why did the US take so long to defeat them. Its the same failure as when people try to argue the Russians were not effective in fighting the germans. Ultimately, it reflects worse on the germans themselves who were defeated by these so-called "inferior troops".