During his audition, Rami Malek (Snafu) noticed that the man running the camera was not, as is typical, a young assistant, but an older gentleman who was doing some "very elegant camera work." Midway through his scene, he realized that the camera operator was actually Steven Spielberg.
Originally the project was estimated at $100 million to produce, but ended up costing over $200 million, making The Pacific the most expensive television miniseries ever created by any network up until the release of WandaVision (2021).
Rami Malek claimed that the fake corpses created for the production were so convincing he was greatly disturbed after filming the scalping scenes.
Trying to avoid the long shooting and production process of Band of brothers (2001), which took several years, The Pacific had several units shooting episodes at the same time all over 2009.
Though the final battle on Guadalcanal is very accurate, some details are left out. First, the battle lasted for nearly 3 days, and ammunition did run out. John Basilone was also seen killing Japanese soldiers with a machete.