War artist Alfred Munnings was invited by the Corps to tour work camps .
War artist produced drawings , watercolors and paintings , including Draft Horses , Lumber Mill in the Forest of Dreux in France in 1918 .
War artist Alfred Munnings was invited by the Corps to tour work camps , and he produced drawings , watercolors and paintings , including Draft Horses , Lumber Mill in the Forest of Dreux in France in 1918 .