Mont-Saint-Michel, otherwise known as the Nest, is a holy island that became known as one of Europe's major pilgrimage destinations, for many centuries, and is also a UNESCO World Heritage Site.
Daryl's grandfather's name was William T. Dixon.
On June 6, 1944 General Dwight D. Eisenhower ordered the invasion of France's Normandy coast to drive off the Nazi occupation. Normandy, itself is a designation for the "land of the Northman", or the Viking horde which settled and assimilated on the French coast in the 9th century. These Northman would eventually travel over the English Channel, colonize a significant portion of Great Britain in 1066.
"Coming Home", the title for the episode, is the only episode of this season which has an English appellation, the rest before this were in French.
The flag used to kill the dead looks similar to the one used by the French Resistance during the Second World War.