To overturn the Treaty of Versailles by rearming and reintroducing conscription, by remilitarizing
the Rhineland, uniting with Austria and reclaiming land lost to Czechoslovakia
To gain more Lebensraum or living space for the expanding
German population. This extra land would be found by
invading and capturing the USSR
Invading the USSR would solve Germany's other aim which was to defeat Communism,
the political system they detested because they blamed German Communist
revolutionaries for defeat in WWI