I probably own 12 Civil War pension files, and a few service files.
I'm a little confused about your goals. Did you want to add PDFs of the files to William Bowers' page? Are you interested in showing where he served?
For one Civil War soldier I've been researching for over a decade, his service record includes a letter he wrote asking for leave, as well as information about how he was wounded at Chickamauga. I'll probably eventually add those to his Wikitree entry here.
For my great-grandfather, there are marriage records and a death certificate that are available nowhere else. For my great-grandmother, there's a letter in her own handwriting asking about his pension. I added that to her Wikitree memorial.
Other than that, I just keep all of my Civil War records on file. Last year, someone wrote to me asking about their ancestor, who was briefly married to my great-grandfather. It turned out that, since I'd kept most of the file in good shape, I was able to let them know what happened to their ancestor and her first husband. So you never know.
If you had something else in mind with your question, please let me know.