The recently developed NATO NEC Command and Control Maturity Model (N2C2M2) defined new C2 approaches, established their relation with one or more maturity levels and studied the implications throughout the NCW value chain, the C2 domains (information, cognitive and social) and the organization's effectiveness. This paper focus on a set of experiments especially developed to validate N2C2M2's hypothesis and implications by instantiating each of the models' C2 approaches, applying ELICIT, a network-enabled collaborative environment involving 17 human subjects, and conduct a quantitative analysis on several C2 domains and variables. The experiments confirmed significant differences among the several C2 approaches, demonstrating that increasing the C2 approach maturity of an organization, increases the extent of shared information and critical information available, result in better interactions, broader extent of correct understanding, self-synchronization and increased organizational effectiveness and efficiency. More specifically, COLLABORATIVE approach was the most effective and efficient, while EDGE approach performed best in making critical information available to the right positions, reached highest extent of correct understanding and most ordered state of cognitive self-synchronization. As expected, CONFLICTED approach achieved worst scores in all domains.