The 18th annual Civil War Park Day on April 5 is an opportunity for volunteers to help maintain Civil War battlefields, parks and buildings. Many of the 98 sites that have signed up with the Civil War Trust, sponsor of the event, operate with few employees and on a limited budget. Park Day helps them get ready to open for the season.

That help, depending on the location, may include picking up trash, painting fences, cleaning monuments, mulching gardens, trimming bushes, mowing grass, planting trees and flowers or splitting and stacking firewood. Assignments for interior spaces could include dusting, sweeping, mopping and window washing.

Locations include the famous, such as Gettysburg, which has asked for help clearing brush, and Antietam, where assistance is requested to plant wild flowers, to the less well known such as Old Cahawba Archaeological Park, an Alabama ghost town where help is needed to clear debris.

Registration is required, and in some cases, volunteers will be asked to bring their own tools and gloves.