Here's some Rigsby military records that I've come across in my research. Also see my earlier post of the WW1 draft registration cards.
R-numbers shown here relate to my database. I have further information on anyone with an R-number. If you know more about anyone without an R-number, please contact me.
Note: These links all worked at the time I visited them, but may or may not now. In some cases the target site may have been rearranged, so you might have to re-search that site to find the Rigsby records.