Military command and control systems rely on information that is timely, accurate, and in the correct form in order to make mission-critical decisions. Therefore these systems rely on having predictable quality of service, or QoS, for information creation, delivery, and processing. The Joint Battlespace Infosphere, or JBI, is an information system architecture being developed to support the military?s information exchange for decision making at all echelons. The JBI is based upon a publish, subscribe, and query architecture with support for information fusion and aggregation. This paper discusses the issues of providing QoS in a JBI implementation and describes a prototype JBI implementing publish on demand, an approach to providing QoS managed information through a JBI.