This unusual drawing shows the backs of the heads of a man from the army and two sailors. The title ‘Jack and Tommy’ refers to their military roles – Jack meaning a sailor and Tommy a private in the army. The strong lines, vibrant primary colours and curious viewpoint create a bold composition. Cadell joined the Royal Scots in 1915 and produced a series of drawings of army life before leaving for service in France. Twenty of these drawings were published in 1916 in the book, also titled ‘Jack and Tommy’, which was sold to benefit the Red Cross.