After early developments 1793–1899, first specifically signals units were formed circa 1900 as part of the Engineers. The experience of the Battle of France showed that signals units being under the aegis of the Engineers did no longer allow for fully effective communications. As a result, on 1 June 1942, by Ministerial Decree no 3600/EMA/1 of 4 May 1942, Transmissions became a distinct arm, as part of the Armistice Army (of Vichy France).
Information and Communication Systems Command (Commandement des Systèmes d’Information et de Communication), in Cesson-Sévigné[1]
School of Signals (École de Transmissions), in Cesson-Sévigné
Centre of Initial Training for Non-Commissioned Members for CSIC Command (Centre de Formation Initiale des Militaires)/18éme Régiment de Transmissions, in Dieuze
Centre/Regimental Staff
Instruction Office
x2 Instruction Companies
Logistics Office
28th Signal Regiment (28éme Régiment de Transmissions), in Issoire — Providing telecommunications and military information systems
Command and Logistics Company
x7 Communications Company
x1 Reserve Company
40th Signal Regiment (40éme Régiment de Transmissions), in Thionville — Providing Information and Communication systems
Command and Logistics Company
x6 Communications Company
x1 Reserve Intervention Company
41st Signal Regiment (41éme Régiment de Transmissions), in Douai — Providing support with divisional command posts
Command and Logistics Company
x6 Communications Company
x1 Reserve Intervention Company
48th Signal Regiment (48éme Régiment de Transmissions), in Agen — Providing training and operations support command, command posts
Command and Logistics Company
x6 Communications Company
x1 Reserve Intervention Company
53rd Signal Regiment (53éme Régiment de Transmissions), in Lunéville — Providing SIC and HQ main command posts
Command and Logistics company
2nd–6th Companies, one for long distance communications, one for command and support to the divisions, and one ready for air-mobile deployments (4th)
7th Company supporting equipment and supply deployed units
8th Reserve Security and Defence Company
Intelligence Command (Commandement du Renseignement) — Command isn't a transmissions affiliated command[2]
785th Electronic Warfare Company (785éme Compagnie de Guerre Electronique), in Saint-Jacques-de-la-Lande
44th Signal Regiment (44éme Régiment de Transmissions), in Mutzig — Electromagnetic and Acquisition Intelligence
Command and Logistics Company
x6 Electronic Warfare Companies
54th Signal Regiment (54éme Régiment de Transmissions), in Haguenau — Tactical electronic warfare regiment
Command and Logistics Company
Administration and Support Company
Operational Centre for Electronic Warfare Preparation
x4 Electronic Warfare Companies
x1 Reserve Intervention Company
Regiments not under a specific command
Aeuronautical Information and Communication Systems Tactical Group (Groupe Tactique des Systemes d'Information et de Communications Aéronautiques), in Évreux — Air Force communications unit
Joint Directorate of Infrastructure Networks of Information Systems of the Île-de-France/8th Signal Regiment (Direction Interarmées des Réseaux d'Infrastructures des Systèmes d'Information d'Île de France / 8éme Régiment de Transmissions), at Fort Mont-Valérien, Suresnes — Joint regiment providing telecommunications and information systems for the Ministry of Defence
National Operational Support Centre/43rd Signal Battalion (Centre National de Soutien Opérational/43éme Bataillon de Transmissions), in Orléans — Logistical support body for the DIRISI
General Blondé; Captain Turlan (1967). Historique des Transmissions de l'Armée de terre : Tome 1 : Des origines à 1940 / Tome 2 : De 1940 à 1962 / Tome 3 : De 1963 à 1988. Armée de terre. ASINB0014WF4KY. (Part of the APPAT collection)