Despite Canada's active participation in the First World War, which many claimed made Canada a nation, the country was almost defenceless in September 1939 when war was declared again. Larry D. Rose, a long time journalist and a military specialist examines the military's own failures, the hidden agenda of Prime Minister Mackenzie King, and the divisions within Canada leading up to Canada's entry into the war. He suggests that the lack of preparedness was directly responsible for two of Canada's costliest military defeats, the battle of Hong Kong and Dieppe. Mobilize! is based on interviews with veterans and extensive research of the documents of that era. Despite the fact that many military historians have written about this period, no one has examined this part of our military history. It is an injustice to all those who fought and died in the early stages of the Second World War.