Let's see, about the camera angle, so to speak, I can think of the following based on a novel where I had to alternate between multiple POVs.
First, the master POV that opens the chapter and is master because the main actions of that chapter will converge in him (based on your situation, he is not the MC). The best example, since you are Chilean, is obviously San Martin. I suppose you understand that perfectly: let's suppose that O'Higgins is your MC, he has a hole in his arm and is recovering (that is, absent from the scene), so San Martín must direct the battle of Maipú.
Camera or POV 1: San Martín and the boys seeing how they come out of it, and it's serious, that's where war is defined. Whatever happens on that couple of pages should go together. Then, as shown in this example, line break with white space and we go to:
Camera or POV 2: The realistic army, troop movement, general panning. As in the previous one, what happens on this page must go together. Then another line break with white space and we go to:
Camera or POV 3: The Patriot Army. Worse than San Martin, seeing how a foreigner manages to get them out of that one, and it's much more serious. But, as in the previous one, what happens on this page goes together. Then another line break with white space and we go to:
From then on the camera or POV alternates between the 3 POVs but it has already become clear to the reader which these 3 POVs are. Therefore, there is no problem in describing, for example: a cannon that is fired from the Spanish side and the explosion on the opposite (or Chilean) side in the same paragraph.
Only in terms of its importance as a POV master (and that's why I put it with a line break or separate period), the thoughts, emotions or swear words of the POV master, seeing the tremendous damage that cannon shot did among the people.
Oh, and by the way, now that I remember, a wonderful example of multiple points of view is the narrative of the rebels' attack on the Death Star in Richard Dean Anderson's adaptation of Star Wars. But that use...
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...is used within a chapter when the action of a particular scene is actually over and rather tells what happened the next day or the next week or something like that. It is a severe cut that almost indicates the "liar" beginning of a chapter and it was not established thus merely for the needs of the story itself.
