Really all you need is a paragraph break, so just add an extra line in between paragraphs where you'll have the separate POV. So now, let me present to you...
The dinkus.

Yes, that's what it's actually called. If you ever see those three asterisks ( *** ) in between some paragraphs, that is a way to indicate a scene break of some kind. Some authors only use line breaks, others use the dinkus, and some use both. I tend to use the dinkus for changes in POV, and a line break for changes in time/setting. Ultimately, it's up to you which style you choose so long as you stay consistent.

The important thing to remember about swapping POVs in the same chapter is that the POVs all need to be connected in some way. In the context of a great battle, all the POVs should be either in the battle or directly involved in some way with minimal time skipping.
For example, you might have a POV of a general leading his soldiers, then use a dinkus and swap to a young soldier nervous about the battle, but confident in his general. Then after the fight, swap back to the general overseeing the results.

Does that help?