The Kamar-Taj battle was the biggest in the film

The documentary goes into delicious depth when talking about all the moving parts that it took to film the Scarlet Witch’s assault on Kamar-Taj. For example, the building has three rooftops in the movie, but it was only shot on one, which had to be redressed over and over. Some shots would have 25 explosions in them alone. Forty to 50 devices called “ratchets” were used at once to hurl the stunt people through the air. Shots took months to plan and figure out. It’s intense.