This film is a time-capsule
Made in 1933, in the early depression, in the year that FDR took over from the self-immobilized Hoover administration, a very able executive straight-jacketed by a do-nothing conservative ideology.
Also, of course, the year the Nazis came to power in Germany.
It provides a clear view of the revulsion in the West, fifteen years on, remaining from the carnage of the Great War, while the Germans - nursing their grievances, racism/anti-semitism, and un-vanquished militarism, strident nationalism, began to reconstitute the warlike state.
When folks wonder at 'appeasement', they need to understand the radically different responses to War War I between Western Europe at large and post-war Germany. Truly, night & day. And now looking back from afar at the carnage then yet to come, but at that time readily predictable, who was rational and who was insane ?
March & Grant were both outstanding. Grant's character also foreshadowed the tension between a 'gentleman's war' and the Nazi's total war yet to come.