Learn why and how Hitler builds the Siegfried Line. As early as 1936, Hitler has plans for world domination. He makes decisive move to challenge the Treaty of Versaille and stations troops in the Rhineland that boarders France and Germany. He want to show the Western counties that Germany is a formidable force. So he orders a massive line of fortifications to be built the length of the Germany border. Initially progress is slow until he brings in renowned engineer Fritz Todt in May 1938. Thousands of laborers are conscripted to work on the project. Workers spread seven million tons of gravel, pour six million tons of cement, and unfurl three million coils of barbed wire. As a result the fortifications are finished within six months.