The shapes are minimalist but sensuous; the glazes are astonishing, ranging from the most austere white to rich wine-colored reds and cobalt blues. Some pieces have surfaces that are noticeably smooth and flat, while others are densely patterned, even nubby in texture.

Exhibit at World War I Museum showcases powerful anti-war images of Louis Raemakers. The Belgian poet Maurice Maeterlinck called him “a guardian of justice.” The..