How did germany first violate the treaty of versailles in 1935 and 1936?

By blowing up the one american cruze line

Stopped Paying Reparations
The Treaty of Versailles said Germany had to pay 6.6 billion pounds over 66 years to help pay for damages caused by the war.
Hitler stopped paying the reparations and put the money back into the German economy. 
Again, no one did anything in order to keep peace.
Rebuilt Germany's Army
In 1935, Hitler restarted the conscription process in Germany and built up Germany's air force and navy.