Sam's Army is a compelling portrait of a complex man and the formidable military he built. Sam Hughes was not your standard-issue military leader. Canada's World War I Minister of Militia and Defence concentrated power in his own hands, insisted that the Canadian military use the ill-conceived Ross rifle and liberally promoted his cronies. But there was no denying Hughes was a visionary. He assembled the world's largest-ever volunteer army and bucked superiors to keep his ferocious fighting force together in one Canadian Corps.