History
4th Field Signal Coy first appeared as a PDF unit of the 4th Bde in the Western Command in 1940. From 1942 until 1946 4th Bde was part of II Division before reverting back to the Western Bde. The unit name changed to 4 Bde CIS Coy in 1998 with the amalgamation of the CIS Corps and Military Information Systems. The 2013 re-org resulted in the disbandment of the 4th Bde and the members of the unit were almalgamed into 2 Bde CIS Coy.