7-60. Battlefield success requires effective communications. Redundant systems are necessary to allow for communications throughout corps and division AOs in contested environments. Both corps and division commanders must be able to communicate with adjacent units, supporting joint forces, and host-nation and multinational forces in addition to their subordinates. The use of primary, alternate, contingency and emergency (PACE) forms of communication as well as organic unit liaison teams and digital liaison detachments provide commanders options to ensure effective coordination and interoperability. Continuous mission command requires adequate, but not continuous, connectivity.