You can also do a general search in the Digital Library at the Combined Arms Research Library (CARL) at Fort Leavenworth. This will kick up material that was produced by organizations other than the Combat Studies Institute.
However, as there is a lot of material here, I would first look elsewhere for an engagement to study and then use searches in the Digital Library to find additional information.
Interested in the teaching of logistics, the history of the Old West, and decision-forcing staff rides.
Another good resource for information on engagements on the Eastern Front is the Axis History Forum. Some of the folks who contribute to discussions there have a great deal of detailed knowledge about particular engagements.
You may also want to look at this doctoral thesis, which is about fighting in Estonia in 1944.
Interested in all things related to infantry tactics, techniques, and conventions.