Military telecommunications networks

From time immemorial, the military and, by extension, civil protection professions have used extensive means of acquiring and exchanging information to carry out their missions:

• acquire the information needed to understand the balance of power and decide on strategic orientations;

• understand tactical situations and direct the action of intervention groups scattered across the field;

• and, to a lesser extent, control the information that can motivate people's behavior in the face of events.

Advances in information technology have not fundamentally transformed these objectives. However, these advances have largely transformed the technical solutions proposed to achieve them, and it has become essential to have an overall vision of these to understand the new military telecommunication systems deployed to meet them.

The circulation of information in theaters of operation is a fundamental factor in the effectiveness of armed forces. Modern weapons and information systems rely on high-performance, complex communications systems that meet specific military requirements:

• immediate availability in the event of a crisis and the ability to "project" (geographical mobility) at very short notice, requiring light and simple resources;

• the deployment flexibility required to adapt resources to the diversity of missions and command structures. The modularity of the communications system means that command structures can be modified, even during a mission, and the system can be highly mobile;

• responsiveness, essential for adapting to the nature of the action, the theaters of engagement, the place and time of engagement, and the joint or multinational nature of the forces, with its differences in language and procedure. In particular, we need to be able to manage dispersed forces in large, uncontrolled areas, as well as respond to the challenges of urban combat;

• interoperability of telecommunication systems with each other and with those of allied forces, a requirement for today's operations;

• communication security ;

• lastly, the long-standing requirements of voice command in all circumstances and permanent liaison within the military community, which are still completely relevant today.