Chicken marengo is an italian dish consisting of a chicken sautéed in oil with garlic and tomato, garnished with fried eggs and crayfish. the dish is similar to chicken à la provençale, but with the addition of egg and crayfish, which are traditional to chicken marengo but are now often omitted. the original dish was named to celebrate the battle of marengo, a napoleonic victory of june 1800.

Source: Wikipedia