From the late 1960s through the 1970s and 1980s, MACG-48 participated in many training exercises, honing its combat skills and refining its tactics, techniques and procedures in order to keep abreast of the ever-changing C3 community.

The group focused its training on the tactics, techniques and procedures critical for success in the Southwest Asia region, using lessons learned during combat.

After five years in Highwood, the group headquarters moved again to its current location aboard Naval Station Great Lakes near Chicago, Illinois.

During December 2004, marines activated to augment units in support of Combined Joint Task Force – Horn of Africa in Djibouti.

From September to October 2005, one hundred marines augmented Joint Task Force Katrina in New Orleans, Louisiana.