The Battle of Halai, or the Battle of Halay, which took place in December 1894, was one of the opening battles of the First Italo-Ethiopian War. In the 1890s, the government of Ethiopia began plotting an insurrection in Italian Eritrea to push back against Italian encroachment on their country. On December 15, 1894, Bahta Hagos, the "chief of Okule-Kasai province in northern Tigré," launched a rebellion against the Italian authorities.