I was wondering if anyone could direct me to more information on the US 67th field artillery? My grandfather fought in that section of the US forces during World War II and I know virtually nothing about what he did, if possible.
There's a limit to what I can do, but this will give you a starting point: https://history.army.mil/html/books/060/60-5/cmhPub_60-5.pdf
That will tell you where the unit was and what campaigns it participated in. From there, you should be able to reconstruct what your grandfather was doing. You might also want to look at: https://history.army.mil/html/books/070/70-27/cmhPub_70-27.pdf
You should also be able to get your grandfather's war record by starting here: https://www.archives.gov/research/military/veterans/online
I hope this helps!