For example, using your subject research you could overlay and compare historic maps of place with the modern aerial imagery of today. This tool can also support additional information e.g. text, photographs, links to other places or information etc.
Here we can see two types of map:-
Welsh Memorial and Honour Rolls of WW1 - Point Map
WW1 Aviation Sites in Ireland – an interactive mapping resource - Story Map
If these resources are of interest to your project – as a community research or academic research project – then do please get in touch with us, and we can explore ways of helping to develop similar resources for your WW1 project.