Germany , at this time led by Hitler , had lent material support to the Nationalists .
At about 16 : 30 on Monday , 26 April 1937 , warplanes of the German Condor Legion , commanded by Colonel Wolfram von Richthofen , bombed Guernica for about two hours .
German , at this time led by Hitler , had lent material support to the Nationalists .
At about 16 : 30 on Monday , 26 April 1937 , warplanes of the German Condor Legion , commanded by Colonel Wolfram von Richthofen , bombed Guernica for about two hours .