Original World War II era Canadian propaganda poster featuring dramatic artwork by Canadian artist Eric Aldwinckle. The poster depicts a powerful clenched fist gripping a sledgehammer against a stylized red, white, and blue background above the slogan "IT’S OUR WAR". The lower margin notes issuance by the Director of Public Information, Ottawa, under authority of the Minister of National War Services.

The poster measures approximately 21" x 31". It shows expected age and handling wear including fold lines, scattered creasing, light edge wear, and some minor discoloration from storage and display. Overall, the poster has strong graphics and striking wartime imagery. This is an appealing and iconic piece of Canadian WWII propaganda art that would display well in any military, historical, or vintage poster collection.