This chapter examines events in August 1914, including the Left’s acquiescence to the war, and how it managed to co-ordinate its response. It will discuss the principal characters in the ‘patriotic labour’ camp, and survey specific unions and ordinary workers who gave their support – and their lives – to the war effort. The progress of the war inevitably gave rise to anti-German hostility, and the motivations and implications of this will also be analysed. Finally, there will be a survey of ordinary trade unionists and labour activists who distinguished themselves during the conflict. In terms of both an elite and subaltern level, it will be argued that there was a decidedly united response from labour. Although enthusiasm for the war amongst the labour movement was rare, there was a general consensus that, once begun, it had to be seen through. Ultimately, this chapter argues that labour patriotism, rather than anti-war agitation, characterised the Left’s response to the war, and that the history of labour patriotism in this period has been unjustly neglected by historians.