Keterlibatan Jerman dalam Perang Saudara Spanyol dimulai dengan permulaan perang tersebut pada Juli 1936, dengan Adolf Hitler tak lama mengirim unit bersenjata dan udara untuk membantu Jenderal Francisco Franco dan Pasukan Nasionalis. Uni Soviet mengirim pasukan yang berjumlah lebih sedikit untuk membantu pemerintahan Republikan, dengan Inggris dan Prancis dan dua puluh negara lain memberlakukan embargo terhadap pihak manapun di Spanyol.
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Sumber primer
Schmitt, Bernadotte et al. eds. Documents on German foreign policy, 1918–1945. Series D (1937–1945) vol III: Germany and the Spanish Civil War 1936–1939 (Washington: Government Printing Office; 1950) WorldCat library holdings