IBGs have not been operationalized. Beacsue of the first part of the system, Integration. This integration requires the various elements in the battle group are able to talk to one another, which clearly isn't the case (arty cannot talk to infantry without going through Brigade HQ, communication protocols and equipment), this needs a common communication and battle management system with real time networking which is presently absent. That said, the very fact the the proposed IBGs are to replace the Brigade system, this means there will be some level of communication interoperability among them, but with only 3-5 IBGs with 5000 troops each. they will likely serve very specialized actions and will not be as grand as being madeout.