 Originally activated 1 December 1967 in Vietnam, it was inactivated 2 October 1971 at Fort Lewis, Washington, and reactivated 13 September 1972 at Fort Bragg.4th MISG currently consists of a headquarters company and three regional PSYOP battalions (POB) and one dissemination battalion.The 3rd POB is currently part of 4th POG(A) that supports both 4th POG(A) and 8th POG(A) and provides both with radio, television, digital-audio-visual and print assets for developing MISO products such as leaflets, posters, handbills, newspapers, radio and television broadcasts.