Tom Kemp at the GenealogyBank blog pointed to two good videos. Tom's views are always on-point, so I went over to take a look. I heartily second Tom's suggestions.
See this New York Times video on a volunteer effort at the historic Green-Wood Cemetery in Brooklyn, which honors some 3,000 Civil War veterans with new gravestones. It also indicates that an additional 6,000 soldiers' unmarked graves may be at the cemetery.
The other is by columnist Rick Koster of the New London (Connecticut) Day, who demonstrates "Righteous Rick's Obituary Service." Be patient as this video loads.
Thanks, Tom, for the head's-up on these!
Tom's blog on frequently updated GenealogyBank resources offers practical tips, searches and information to help readers learn more details about their ancestors.