An ESB is a platform that provides services such as message routing and transformation. Along with this, it has the capabilities to ease the pains of connecting heterogeneous C4I systems among various defense forces. This paper describes an assessing mechanism of optimum selection of Enterprise Services Bus (ESB) for C4I architecture framework. We use Analytic Hierarchy Process (AHP) for analyzing different Enterprise Services Buses (ESBs). In this paper, we present experimental results that may be utilized for architecting C4I system and can further help organizations in selecting an ESB in an optimized way.