Question

What was the dress rehearsal for ww2 that demonstrates the destructive power of modern warfare?

Answer 1

The Answer to your question is: "The Spanish Civil War" which took place from 1936-1939.

Fun Fact: Hitler was involved in the Spanish Civil War. Adolf Hitler sent Air and Armored units to assist with the Spanish Nationalist during the war. The war was also a great testing ground for Hitler's new weapons which would soon lead to the 2nd world war.

Answer 2

The Spanish Civil War (1936-1939).