Earth Day is celebrated every year on April 22. Each year, the US Army celebrates Earth Day at approximately 200 major commands, installations and organizations in the continental United States, Alaska, Hawaii, Korea, Japan, Italy and Germany.

• Aberdeen Proving Ground, MD
• Camp Parks, CA
• Chievres Air Base, Belgium
• Fort Belvoir, VA
• Fort Campbell, KY
• Fort Detrick, MD
• Fort Hunter Liggett, CA
• Fort Knox, KY
• Fort Wainwright and Fort Richardson, AK
• Garrison Grafenwoehr, Germany
• Heidelberg Garrison, Germany
• Southern Regional Environmental Office, Zoo Atlanta, GA
• Storck Barracks Illesheim, Germany
• Tobyhanna Army Depot, PA
• U.S. Army Corps of Engineers, Jacksonville District, FL
• US Army Corps of Engineers, Mobile District, AL
• US Army Corps of Engineers, Seattle District, WA
• US Military Academy, NY
• Walter Reed Army Medical Center, DC
• 6th Area Support Group, Germany
• 96th Regional Readiness Command, Salt Lake City, UT
• 417th Base Support Battalion, Kitzingen, Germany