National Devil Dog Day is observed on April 27 and celebrates both a beloved snack cake and the historical legacy of the U.S. Marines, who earned the nickname "Devil Dogs" during World War I. The day combines culinary delight with historical reverence, encouraging participants to indulge in Devil Dog cakes, which consist of two pieces of devil’s food cake filled with marshmallow. Celebrations may include baking homemade versions of the cake, exploring the history of the U.S. Marines, and learning about food innovation related to the baking industry. The day was established by Sean Alexander Sobel, inspired by fond memories of sharing Devil Dogs with his grandfather. This celebration serves as a reminder of the ties between culinary traditions and military history.