sentences:  Unsuccessful at first, he worked as an electrical engineer.Working in this capacity for the Old Memorial Theatre, Stratford, brought him into acquaintance with Marie Corelli, who introduced him to Thomas Lipton, a connection that led to commissions to draw advertising sketches for Lipton tea, Player's cigarettes, Keen's Mustard, and Beecham's Pills.In 1914, he joined the Royal Warwickshire Regiment as a second lieutenant and served with a machine gun unit in France until 1915, when he was hospitalised with shellshock and hearing damage sustained during the Second Battle of Ypres.