This IDEF0 diagram example was redesigned from the Wikimedia Commons file: C4ISR Architecture Framework, Example Activity Diagram in IDEF0 Format.jpg. [commons.wikimedia.org/wiki/File:C4ISR_Architecture_Framework,_Example_Activity_Diagram_in_IDEF0_Format.jpg]
"... the C4ISR concept of Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance ..." [en.wikipedia.org/wiki/C4ISR]
"The C4ISR Architectural Framework (C4ISR AF) is now known as DoDAF, is a reference model developed by the US Department of Defense in the 1990s." [commons.wikimedia.org/wiki/Category:C4ISR_Architecture_Framework]
"The Department of Defense Architecture Framework (DoDAF) is an architecture framework for the United States Department of Defense (DoD) that provides visualization infrastructure for specific stakeholders concerns through viewpoints organized by various views. These views are artifacts for visualizing, understanding, and assimilating the broad scope and complexities of an architecture description through tabular, structural, behavioral, ontological, pictorial, temporal, graphical, probabilistic, or alternative conceptual means.
This Architecture Framework is especially suited to large systems with complex integration and interoperability challenges, and it is apparently unique in its employment of "operational views". These views offer overview and details aimed to specific stakeholders within their domain and in interaction with other domains in which the system will operate." [en.wikipedia.org/wiki/Department_of_Defense_Architecture_Framework]
The example "C4ISR architecture framework - IDEF0 activity diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the solution "IDEF Business Process Diagrams" from the area "Business Processes" of ConceptDraw Solution Park.