Tympanomastoid surgery is needed for the chronic draining ear or in the case of a cholesteatoma. This surgery involves the middle ear space as well as the mastoid and usually the incision may be through the tympanic membrane (eardrum) or behind the ear. 1 = Mastoid Bone 2 = Middle Ear 3 = Tympanic membrane (eardrum).his surgery involves the middle ear space as well as the mastoid and usually the incision may be through the tympanic membrane (eardrum) or behind the ear. 1 = Mastoid Bone 2 = Middle Ear 3 = Tympanic membrane (eardrum).
After WW1, they built the Maginot Line, along their border with Germany. This was a massive defensive fortifiations with underground bunkers that could be used for troops and support and command and control. In 1940, the Germans defeated this defensive line by attacking through Belgium and going around it.
France and England declared war on Germany on September 3, 1939, two days after Germany invaded Poland. Technically, Germany was already at war with France when the German army attacked in May 1940. They invaded Holland and Belgium to keep the French and British from attacking Germany from there.echnically, Germany was already at war with France when the German army attacked in May 1940. They invaded Holland and Belgium to keep the French and British from attacking Germany from there.