Roberts, Andrew. The Storm of War (p. 553). HarperCollins e-books. Kindle Edition (footnote omitted):
The last direct order to be personally signed by Hitler in the bunker was transmitted to Field Marshal Ferdinand Schörner at 04.50 on 24 April [1945]. Now in private hands, the original reads:
“I shall remain in Berlin, so as to play a part, in honourable fashion, in the decisive battle for Germany, and to set a good example to all the rest. I believe that in this way I shall be rendering Germany the best service. For the rest, every effort must be made to win the struggle for Berlin. You can therefore help decisively, by pushing northwards as early as possible.With kind regards, Yours, Adolf Hitler”
The signature, in red pencil, looks remarkably normal, considering the circumstances.