The two Clamperl evolve in the same way Misty's Poliwhirl evolved, by transferring the Pokémon to a different Pokémon Center with a required item, rather than trading between Trainers.
When Grovyle uses Bullet Seed on Team Rocket's mecha, Jessie says, "What you seed is what you get!" This is a title of an earlier episode revolving around Bullet Seed.
In the final attack, before Team Rocket is sent blasting off, Huntail uses Screech, and then Pikachu uses Thunder. In the dub, Pikachu attacks first, and it is Huntail who makes them blast off.
The dub title is a reference to either the Revolutionary War or the Marvel Comics crossover of the same name.
Ash and his friends meet up with Professor Birch again.