The Missouri State Archives Soldier's database (http://www.sos.mo.gov/archives/soldiers/) lists three Wipkes, including George W. of St. Louis (go to the above link and search on last name Wipke, then click "Details" for George W's info). Says he served with Co. M of 354th Infantry to discharge; overseas from 6/24/18 to 5/22/19. PFC rank. Also includes Army serial #, home address and birthplace info. No mention of MIA, so may not be same. Hope this helps in some way.