"National Cemetery Administration will host Memorial Day ceremonies at VA national cemeteries across the country with the help of local communities. Each cemetery and community will add their own special touch of patriotism and "thanks" during the events.
Memorial Day is a United States federal holiday observed on the last Monday of May (May 27 in 2019). Formerly known as Decoration Day, it commemorates U.S. Service Members who died while on active duty. First enacted to honor Union and Confederate soldiers following the American Civil War, it was extended after World War I to honor Americans who have died in all wars." US Department of Veteran Affairs
Check here for event listings by state
"Many Veterans, with a service connected disability rating, are entering Federal parks for free with the Lifetime National Parks Access Pass from the U.S. Department of the Interior, National Park Service. Good for entry into 400+ National Parks and over 2,000 recreation sites across the country, the Lifetime Access Pass is another way a grateful nation says thank you for the service and sacrifices of Veterans with disabilities." US Departmrnt of Veteran Affairs
Click here for more details on National Park passes for Veterans