This document provides an overview of a presentation given to the Whitby Probus Club about World War 1 and Oshawa's role. It was presented in four parts: 1) the big picture of WW1 in Europe; 2) Canada's role in the war, including battles and impacts on the home front; 3) Oshawa's local history, including numbers who fought and died, imprisonment of Ukrainians, home children who were sent to Canada, and stories of individuals; 4) what happened to veterans after the war. The presentation was given by Robert Bell and Glenn McKnight to provide historical context and highlight Oshawa's contributions during WW1.