You can build architectures and model complex systems by using the Department of Defense Architecture Framework (DoDAF) with the Activity Based Method (ABM).
Activity Based Methodology (ABM) overview
The Activity Based approach to architecture development provides several benefits, such as the ability to generate Operational and System Views from model data, greater data consistency, and higher architecture and analysis product quality. The ABM was introduced for DoDAF 1.5.
The operational architecture view describes the tasks, activities, operational elements, and information flows that are required for a military operation to take place. It describes what types and how often information can be exchanged, which tasks and activities are supported by the information exchanges, and the nature of information exchanges in order to establish specific interoperability requirements.
You can create diagrams to describe the Systems View (SV) of a complex system. The systems architecture view describes and depicts systems and interconnections that provide for, or support, warfare functions.
You can run Word reports for DoDAF (ABM) by selecting a report from the Reports menu. Reports assist you with the analysis and communication of MODAF products at various stages in their development.