He screams at the top of his lungs:

It explains how Luffy was able to later (in the Fish-Man Island Arc) knock out 50,000 opponents at will . Marineford was the seed—unconscious and raw—that would eventually bloom into mastery during the timeskip.

When Does Luffy Use Conqueror's Haki In Marineford Fix Official

He screams at the top of his lungs:

It explains how Luffy was able to later (in the Fish-Man Island Arc) knock out 50,000 opponents at will . Marineford was the seed—unconscious and raw—that would eventually bloom into mastery during the timeskip. when does luffy use conqueror's haki in marineford