During World War I, the rank and file of the Australian Imperial Force utilized humour in their social protests against both their officers and the military regimen. This paper looks at the expression of this humour through a variety of mediums and explores the value of humour in providing an outlet through which these men could vent their anger at the military system. It further seeks to highlight how the adoption of humour in social protests became a secure part of the Australian soldiers' “working” identity and how this was sustained throughout the war by the masculine image of the soldier. Further to this, the paper examines the decline in the use of humour in social protest amongst war veterans in the postwar era and its replacement by a more sombre attitude towards protests.