What was Vladimir Lenin's reaction to Germany's defeat in World War I?

Vladimir Lenin argued that World War I was conflict merely for the benefit of the ruling class.

Several German citizens (including those affiliated with socialists) celebrated the abdication of Kaiser Wilhelm II.

When Germany signed the armistice in November 1918, Hitler was so struck by the seemingly undefeated nature of the German Army on the battlefield that he accused Jews, communists, and socialists of stabbing Germany in the back.