I'm not sure what the page references are the Battle Master subclass in the printed PHB, but if you bough it on dndbeyond, then it can be found a ways down on the PHB's Fighter Entry, or much easier to navigate, by looking at the dndbeyond compendium's link for Fighter - Battle Master.
I just bought PHB for my 3rd level fighter but the info in PHB is pretty scant. For example, I can't find a description of Fighter's Maneuvers.
It's a Battle Master subclass feature, not general Fighter.
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My homebrew stuff:
Spells, Monsters, Magic Items, Feats, Subclasses.
I am an Archfey, but nobody seems to notice.
Extended Signature
I'm not sure what the page references are the Battle Master subclass in the printed PHB, but if you bough it on dndbeyond, then it can be found a ways down on the PHB's Fighter Entry, or much easier to navigate, by looking at the dndbeyond compendium's link for Fighter - Battle Master.
dndbeyond.com forum tags
I'm going to make this way harder than it needs to be.