Story related. This is awarded for completing either dynamic campaign. The above achievements are linked to the Japanese and American dynamic campaigns. You should complete both for max exp since rank 10 requires quite a bit of experience.
Some quick advise from Merch:
"It's basically a series of sets of missions in a certain area. There's a couple of thing to note about it: you can only use planes you have unlocked in the hanger, and each mission requires a specific plane. Also if you die you will have to pay to respawn. That said this is the best place outside of versus to gain credits and exp.
The easiest way to get this achievement is to set the year to 1939 so you can use the free default plane, and set it to three wins for victory. I'd recommend the Soviets here since have the best starter plane."