2-71. A higher echelon commander can task organize a BCT by adding or subtracting smaller units and capabilities through the use of command and support relationships. Higher echelon commanders may augment BCTs with additional combat power for specific missions. Augmentation might include aviation, armor, infantry, field artillery, AMD, MP, CA, military information support elements, engineers, CBRN, and EOD. Some of this augmentation may come from other BCTs. Multifunctional and functional brigades, such as a field artillery brigade, a MEB, a CAB, an engineer brigade, and a sustainment brigade can support BCT operations. (See FM 3-96 for additional information on BCT operations.)