This is historically inaccurate. When the Nazi Party came to power Germany was not in any military shape to start a war let alone win one. It was years of inactivity and lack of political will that allowed Germany to occupy the Ruhr and restart its military program while passively encouraging Germany to extend beyond its limitations of Versailles. If the governments of the day had the stomach to actually stand against Germany's aggressive stances, it would have prevented the escalation that resulted in World War 2. Then again, less debilitating treaties than the Versailles would have also helped.
It's such a shame that the Delta movie is replacing a new Macross series for the near future. Would have loved to a new story instead- not sure what they can do with the current Delta one that would pique my interest.