The elements of the brigade deployed to Honduras joining in-country brigade assets in support of Operation Golden Pheasant in 1988. There, the brigade supported the U.S.'s show of force mission, training missions, and humanitarian support. In 1989, the brigade participated in Operation Just Cause, and assumed operational control of all joint task force level tactical communications assets in Panama by overseeing the JTF message switching network, radio nets and ensuring AUTOVON connectivity.
The 35th Signal Group participated in multiple training and emergency deployment readiness exercises between 1967 and 1979 to prepare for any mission. Due to the changes in the organizational structure of the Army, the 35th Signal Group was reorganized as the 35th Signal Brigade on 16 December 1979 to support XVIII Airborne Corps level assets. In 1983, the brigade headquarters deployed to Grenada in support of Operation Urgent Fury, where elements of the brigade established communications by providing tactical satellite communications between Fort Liberty, Grenada and higher level command in CONUS.