At least one of the following criteria must be met:
Military personnel who died on active duty.
Holders of the nation's highest military decorations, including the Medal of Honor, Distinguished Service Cross, Navy Cross, Air Force Cross, Distinguished Service Medal, Silver Star or Purple Heart.
Those who had at least 20 years of active-duty service or active reserve service that qualifies them for retired pay upon retirement at age 60, and those retired for disability.
Veterans honorably discharged for at least 30 percent disability before Oct. 1, 1949.
The spouse or unmarried child (21 years or younger) of any of the above or of any person already buried in Arlington National Cemetery.
A veteran who is the parent, brother, sister or child of an eligible person already interred. Interment must be in the same grave as the primary eligible, the veteran's spouse must waive his or her own eligibility for Arlington, and the veteran can have no dependent children at the time of death."