In defence sector, developing a tactical module is a very challenging task due to limited availability of domain
knowledge. Owing to highly sensitive and confidential nature, very less data and information is available on the internet. It is
observed that lack of knowledge often leads to large number of defects during user trial (due to incomplete or misunderstood
requirements) or less customer satisfaction (due to missed requirements). Cost of fixing defects found in later stages is more as
compared to cost of fixing defects detected in earlier stages of the development lifecycle. In our paper, issues related to newly
incepted requirements of a tactical modules are captured and a case study on three tactical modules is done to derive an
approach for process modification that can be implemented to development life cycle. This will lead to reduced number of defects
in delivered product, resulting in cost reduction and raising customer satisfaction to improve reputation and brand value of the
organization.
