Constructing a length piece of writing - over 50,000 words and need to stick to the chronology of events, at least in the first draft, I have found using the timeline creation tool Tiki-Toki invaluable. You can create one of these for FREE.
Over the last few months I've been adding 'episodes' to a timeline that stretches between 1914 and 1919. You get various views, including the traditional timeline of events stretched along an unfurling panorama. However, if you want to work with two screen side by side the 3D view allows you to scroll back and forth through the timeline within the modest confines of its window.