A World War One Poster. Exhibited in the South West Wales Museums touring exhibition 2015 - 2016, 'Posters of the First World War : Passion, Propaganda and Print'. 'The Key to the Situation' Artist: Unknown Printed : Seargeant Bros Ltd., London & Abergavenny Publisher : Parliamentary Recruiting Committee Date: 1915 Dimensions : 484 x 743 mm Medium : Lithograph