Can anyone tell me what division or command the 421st rocket battalion was attached to? I have my grandfathers separation papers which show he was assigned to the 421st rocket battalion but while trying to get all his patches and everything together for a shadowbox of family history for the living room wall am at a loss for which patch i am looking for. I have found online history that claims 10th army. I have also found 40th division. Can anyone please help shed some light on this for me? Your help would be greatly appreciated. Thank you. A. Wahlen -