Generally they keep the troops in the dark about operations. They mostly don't need to know and landings need to be kept secret. Someone recently asked me what knew about "Operation Chromite." I told hem I didn't know anything about it. When I looked it up I discovered it was the Inchon Invasion. The troops rarely know the operation name when it is happening. It is for purposes of planning, for the press when they later write about it and for the history books.