Belgium's fortifications during WWI were well-suited to defend against an invasion either from north or south, i.e. France and Germany, with fortresses positioned at key points along the lines of movement invading armies would have to take from either country. There were AFAIK even specialized detachments of the Belgian Army who were specifically given the mission of blowing up bridges in the event of invasion.
However, what of invasion from sea, i.e. the British? How were Belgium's defenses in that area? Could Britain invade and conquer Belgium quickly, or would they bog down long enough for the Belgians to ask for and receive help from either the Germans or the French?
However, what of invasion from sea, i.e. the British? How were Belgium's defenses in that area? Could Britain invade and conquer Belgium quickly, or would they bog down long enough for the Belgians to ask for and receive help from either the Germans or the French?