Sites threatened by mining, erosion, commercial and residential development and road widening lead the Civil War Preservation Trust’s 2009 edition of “History Under Siege,” the annual report on the most endangered Civil War battlefields.

In addition to the country’s 10 “most endangered” battlefields, another 15 are cited as “at risk.” They face threats from the usual development, as well as airport expansion, wind energy development, artificial wetland, railroad switching yard and a race track.

The report was released at a March 18 Washington press conference at which actor and history student Richard Dreyfuss and Dr. Libby O’Connell, chief historian at History, formerly The History Channel, spoke.