At the risk of being condemned for writing a "too short" response, I am curious as to you reasoning here that has led you to ask the question. Why would you imagine that Irish people were interested is dismantling Britain's Empire? Indeed, Irish people, such as Sir Michael O'Dwyer were actively involved in the maintenance and administration of Britain's empire, even after Ireland's independence. Despite the disbandment of the British army's Irish regiments, many Irish people still joined and served in Britain's armed forces, which, in the inter-war years, were mostly used to maintain Britain's colonial empire. I would also suggest that efforts at self-rule in the African colonies were very limited until the post-war period, so there would have been very little for Irish people to have supported in those regions. As far as sympathy for Indian self-rule is concerned, Richard Holmes' book "Sahib" suggests that Irish soldiers in India were regarded as the most racist of British forces, and that the departure of the Connaught Rangers from India was welcomed by the locals because of their well-earned reputation for racially motivated violence towards them.