CSSD-21

Combat Service Support Detachment 21 (CSSD-21) is a United States Marine Corps logistics unit with a distinguished record of providing multifaceted support to Marine Air-Ground Task Forces. Formed to deliver supply, maintenance, transportation, and medical services, CSSD-21 has supported operations and exercises both in the United States and abroad. Notably, the unit played a crucial role in supporting Marine Expeditionary Units during deployments, ensuring sustained combat effectiveness in austere environments. CSSD-21’s adaptability and commitment have made it a vital component in Marine Corps expeditionary logistics and support operations.