Many Australians will have a soldier or sailor somewhere in their family tree, particularly from the 20th century onwards. Finding those ancestors who served in Australian contingents during World War One or Two for example, is a relatively straightforward process, mainly because the records are mostly available in Australian archives. However, once the search moves back into the 19th or 18th century, then it can become a more complicated puzzle. This presentation provides an overview of the military history of Europe during the 19th and 18th centuries and outlines the range of records which are available, such as those at The National Archives (UK) in particular as well as Australian archives and military museums and an increasing number of online resources. The wealth of detail will help reveal the life of your military ancestor and may even be able to take your research back into the 18th century.