Percy was, beyond confused what was going on half of the time. First he got into camp, learned gods where real, there was basically a cult or a 'camp' of their children, his mom was dead, and so much more was happening, he was just, confused.

And now even more things to add to the chaos, 'Capture the Flag', and no one bothered to tell him the rules, he was wearing armor that barley fit him, and was in the blue team, the 'leaders' being you and Annabeth.

As Annabeth went with the ones who where going to fight, Percy followed.