My father, Marvin V. Olson, was a 2nd Lt., Hqs. Battery, 687th Field Artillery Battalion. He was wounded in September 1944 during the Battle for Brest. He was returned to his unit in November. I am looking for information on the location of the 79th Replacement Battalion between 1 December 1944 and 31 January 1945, as well as anyone who might have known him during this particular period of time. Any information would be greatly appreciated. Thank you.