>>539793 (OP)
The best example is the rivalry between the army and navy in Japan up until the end of ww2. There is a story about the army purposefully drafting experienced dock workers only to make the life of the navy harder. The reason of this rivalry was mostly due to the lack of a high command that could keep them in order. But it was also because the political influence of both forces dependent upon their influence. If Japs were waging land wars in mainland Asia, then everybody had to kowtow to the army, and the navy was just a glorified taxi service. But if they were fighting for all those Pacific islands, then it was the navy's time to shine, and the army only had to mop up some enemy resistance and police the occupied lands.
Now, in the 1930s had Korea and the Manchukuo, and they were fighting in China. It looked like they will eventually conquer all those lands, and it was all a question of time now. So the army turned its attention towards Mongolia and the USSR, only to end up with a humiliating defeat at Khalkhin Gol. Then it was the navy's turn to shine, and they started conquering all the European colonies, which was quite easy when Europe was busy with the second world war. But of course it threatened American interests, and that resulted in sanctions first. Then the navy had the bright idea of Pearl Harbour, which was a politically retarded idea to begin with. Then it turned out that the navy's tactics and strategies were all wrong to begin with, as they didn't prepare for a war of attrition where the new starts of the show are the air force.
They should have been thinking in terms of logistics, wage a submarine war and use carrier groups to destroy the formations of the US Navy. That way they could have dominated all shipping in the Pacific for enough time to entrench themselves in their new territories, and maybe even let the will of the public of the USA erode. The later is quite unlikely though, but we are already in the land of pure speculation, so I better stop here.
The important lesson to learn is this: war is a political tool, therefore you must force your generals and admirals to serve the political interests of your country, not the other way around. If you can keep them in line, then you also have the force to do away with this inter-service squabbling.