Naval Battles With Japanese in Philippines, Japanese Plane Hit

The video tutorial covers a significant naval battle in the Pacific, highlighting the engagement of carrier planes and a massive attack by Jack planes. The enemy is sighted, and the battle unfolds with intense aerial combat, showcasing the scale and intensity of the conflict.

What does the phrase 'Jack planes come over by the hundreds' imply?

What can be inferred about the scale of the battle from the text?