The Army in Cyberspace" (National Security Watch, May 5, 2014) examines cyberspace and how the Army is developing cyberspace capabilities.After more than 12 years of war, the United States faces many difficult decisions in shaping the joint force for 2020 and beyond.Cyber security is an enormous challenge that has become a national security imperative for the nation.The increasing importance of the cyber domain introduces new challenges as the Army prioritizes its limited resources among personnel, readiness and modernization requirements.The evolving and expansive nature of the cyber domain has created a complicated and massive virtual environment.It has a planetary-level scope with vast interdependencies to the land, air, sea and space domains. Innovation within the cyber domain remains significant as the Army charts the course to Force 2025.Cyberspace is defined in Joint Publication 1-02, "Department of Defense Dictionary of Military and Associated Terms", as "a global domain within the information environment consisting of the interdependent network of information technology infrastructures and resident data, including the Internet, telecommunications networks, computer systems, and embedded processors and controllers."It can also be viewed using a functional framework of five interdependent components: people, data, software, hardware and infrastructure.Growth and innovation in each of the component creates a dynamic system full of opportunities and uncertainty.The Army uses the DOTMLPF (Doctrine, Organization, Training, Materiel, Leader Development and Education, Personnel, Facilities) process to meet Title 10 responsibilities and manage strategic change.The Army has made substantial progress developing cyber capabilities across the DOTMLPF, but there is still work to be done as the Army continues to build the world’s most capable cyber force.This and other ILW publications are available online at http://www.ausa.org/ilw and can also be obtained by calling (800) 336-4570, ext. 4630, or by e-mailing a request to ilwpublications@ausa.org.