Hiroshima, then Nagasaki.
Nagasaki was hit by a B-29 called Bockscar.
The navy and Marines operated mostly in the Pacific, and the army and their air corps in Europe and Africa.
The hellcat, wildcat, corsair, and a slew of bombers operated in the Pacific campaign. The book "Flags of out Fathers" does a pretty good job of hitting the high points and history leading to the war.
The Mustang, thunderbolt, lightning, and another slew of bombers operated in Europe. One of my favorite books in that theater (kinda) was the biography of Roald Dahl, who flew as a fighter pilot in WWII. The book is called "going solo" and his story is pretty amazing. He fought on the European side, flying hurricanes (eventually).
There's a ton of historical books and movies covering the American side and the 8th air force.
