By 22 September 1944, Res.Gren.Btl. 328 and its parent unit, Gren.Ers.Rgt. 253 were defending along the Weisser Weh creek in an area called the Todtenbruch (Dead Man's Moor). Still attached to the 353rd Infantry Division, the battalion was attacked on 25 September by 1st Battalion, 60th Infantry of the US 9th Infantry Division. Extremely bitter fighting took place over the next several days, with the Germans "Clinging to their foxholes and bunkers like beggarlice," according to American survivors of the battle. On 2 October, the 353rd Infantry Division was relieved by the 275th Infantry Division and sent to a rest area near Bitburg to be reconstituted. However, only the staffs and support units were withdrawn while the fighting troops remained behind to be incorporated into the 275th Infantry Division, which was still weak. Res.Gren.Btl. 328 was sent back to the home front to resume its training mission, though all of its combat troops were attached to the Res.Gren.Btl. 453, which was still defending the Todtenbruch and the Kall Valley near Kallbrueck. An assessment of the troops under its command was carried out shortly thereafter by headquarters, 275th Infantry Division and this is what it had to say: "The equipment and arms of the older men and replacement units leaves much to be desired. Res.Gren.Btl. 328 and Landes-Schutz Btl. I/9 came directly from their training role into combat. The shortage of heavy infantry weapons places them at a particular disadvantage. These battalions have only two heavy machineguns each. They have also lost their communications section with the loss of Bunker 45." The 2nd Battalion, 60th Infantry of the 9th Infantry Division renewed its attacked against the Germans defending the Todtenbruch on 6 October with overwhelming artillery fire and bombing by P-47s. Res.Inf.Btl. 453 (with the remaining men of Res.Gren.Btl. 328 attached) was hit hard between 7 and 8 October and the German front line south of Germeter along the Weisser Weh was torn asunder. Part of the German force was surrounded, and fighting devolved in some places into hand-to-hand combat. By 10 October, American forces had fought their way through the Todtenbruch after suffering appalling casualties, and had seized the village of Germeter. The few surviving German defenders withdrew on the night of 10 October.
So, if your father was captured on 10 October while assigned to Res.Gren.Btl 328, chances are that he was captured near Germeter in the Huertgen Forest.
Hope this helps -
Abbott: This sure is a beautiful forest.
Costello: Too bad you can't see it for all those trees!