Signal corps
Asia: Rejimen Semboyan Diraja, Malaysian Royal Signals Regiment
Indian Army Corps of Signals, raised in 1911.
Pakistan Army Corps of Signals, raised in 1947.
Singapore Armed Forces Signals Formation
Sri Lanka Signals Corps
Israeli C4I Corps
Korps Perhubungan TNI AD (Indonesian Army Signal Corps)
Armed Forces of the Philippines Signal Corps
Signal Department, Royal Thai Army

Australia: Royal Australian Corps of Signals
Royal New Zealand Corps of Signals

Europe: Arma delle Trasmissioni, corps of Italian Army founded in 1953, see List of units of the Italian Army.
Royal Corps of Signals, founded in the United Kingdom (under the name Telegraph Battalion Royal Engineers) in 1884.
Communications and Information Services Corps (CIS), the signals corps of Ireland's Defence Forces.
Communication and Information Systems Groups (CIS) of the Belgian Armed Forces, before: Transmission Troops
Signal Brigade, a unit of the Serbian Armed Forces.
Telegrafregimentet, Royal Danish Signal Regiment.
Sambandsbataljonen in the Brigade Nord of the Norwegian Army
Regiment Verbindingstroepen, a regiment of the Royal Netherlands Army.
Fernmeldetruppe of Bundeswehr, before: Signal Corps of the Wehrmacht and Waffen SS.
Signal Communications Troops of Russia.
Signal Corps (French Army).
Viestirykmentti, Signal Regiment of the Finnish Army.
Swedish Army Signal Troops.

North America: Royal Canadian Corps of Signals, formed in 1903 as the Canadian Signalling Corps
United States Army Signal Corps, founded in 1860 by Major Albert J. Myer

See also: Military communications
Telegraph troops