The 185th Port Co. has Campaign Credits for Normandy; Assault Credit 6-7 June 44 for Normandy; Northern France; Ardennes-Alsace: & Rhineland; Occupation Duty in Germany 4 Sept - 20 Oct 45.
For the Invasion of Normandy, the 185th Port/487th Port Bn was part of the 5th Engineer Special Brigade in support of the 1st Infantry Div on Omaha Beach. Unit moved to Antwerp in Nov 1944 where the American units were under the command of the 13th Major Port.
A great website for info on the Port Co`s:
http://www.519thportbn.com/2009/09/port-companies-on-utah-beach.html
487th Port Battalion, attached to the 5th Engineer Special Brigade. (discussed in Bryan Morses' book, A moment in history: the story of the American Army in the Rhondda in 1944. Transfered to Antwerp in November 1944.
units of the 487th Port Bn at Normandy:
184th Port Company
185th Port Company
186th Port Company
187th Port Company
282nd Port Company
283rd Port Company
http://www.519thportbn.com/2010/01/us-port-units-in-antwerp-in-wwii.html