You are right on target regarding the Lost Battalion.
Under SEARCH enter LOST BATTALION, which will bring up several sites for the 36th Infantry Division. These will include this battalion.
They were under a seven-day siege without food or water, and little ammunition when elements of the 442nd Regimental Combat Team broke through German lnes to rescue the surviving 211 men (out of about 1000). The losses to the 442nd were even higher.