My dad and I have been getting our monies worth out if ancestry.com
As Montgomery Burns would say, "excellent".
I'd suggest looking at the Regimental records in FOLD3 as well - use to be arranged where you could find pages of Company and Regimental notes above the alphabetical drop-down individual solider records (IIRC).
The usual suspects here that know what I'm talking about can confirm/deny if that's still true.