Major General Carlos Brewer (5 December 1890 – 29 September 1976) was a United States Army officer who commanded the 12th Armored Division during World War II. After training the 12th Armored Division, he was not permitted to command the division in combat due to his age, so he requested his rank be reverted from major general to Colonel so that he could become an artillery officer in the European Theater of Operations (ETO). He innovated the method of field artillery targeting used in World War II, and implemented triangular organization of divisions.