As all war-fighters and their leaders know, warfare in the 21st Century without effective Electronic Warfare and Cyber Electromagnetic Activities across all operational environments / domains is both unthinkable and unwinnable. Success depends at the very least on control of the Cyber and EM environment/domain at the moment of action and ideally longer term. Overall domination is extremely unlikely, especially given the level of investment by the free-world, but we have a technological edge, if we can hone it, and prepare it for operational use. In the immediate future, achieving local superiority is a huge priority, and will require much skill, training, discipline and resources, all over the long term.
Manoeuvre in the EM environment/domain includes offensive, defensive, scoping, surveillance, management, etc. operations, all across all the defence lines of development, which in the UK are Training, Equipment, Personnel, Information, Doctrine (and concepts & policy), Organisation, Infrastructure and Logistics; all underpinned by interoperability. It includes all of military and information capabilities in all warfighting environments/domains.