During the Second World War, the Congress of IndustrialOrganizations in Canada grew from a handful of members to more than aquarter-million. What was it about the "good war" thatbrought about this phenomenal growth? Labour Goes to Warargues that both economic and cultural forces were at work. Labourshortages gave workers greater economic power in the workplace. Butcultural factors - workers' patriotism, ties to those onactive service, and allegiance to the "people's war"- also fueled the CIO's growth. The complex, oftencontradictory, motives of workers during this period left the Canadianlabour movement with an ambivalent progressive/conservative legacy.