 Except for trips abroad, Trego would live in North Wales for the rest of his life, working in a studio behind his house.He used the town residents, their horses, and the surrounding landscape as models and backdrops for his paintings.Trego was becoming well known for the accuracy of his military depictions as well as the honest, sometimes brutal realism, especially in his Civil War subjects The Civil War works were well received and Trego had much success selling paintings during that time.