As the complexity of DoD systems increases exponentially, the DoD continues to struggle with understanding and improving the resilience of its mission software. The Applied Resilience for Mission Systems (ARMS) Testbed is an environment that enables resilience improvement by experimentation and assessment of different mission system architectures and approaches. This Testbed consists of components for deploying mission system software for testing, capturing system performance, generating traffic, introducing disruptions into the mission system, orchestrating controlled experiments, and assessing and comparing the performance of mission systems. This paper covers the implementation of this Testbed, analysis for mission resilience comparisons, and their application to an operational terrestrial network architecture. Additionally, we introduce the Distance to Failure metric for comparing the resilience of arbitrary mission systems variations.