User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-5851009-20121211073606/@comment-5850470-20121227232017

One thing I noticed is that the camps have opposite strengths- Camp Half-Blood is used to defense and Camp Jupiter is used to attacking/offense. For example, Camp Half-Blood was on defense during the Battle of the Labryinth and the Titans' attack on Mount Olympus; Camp Jupiter attacked Mount Orthys and a large amount of their training is based on attacking.