There have been many interesting stories reported for the centenary of the First World War, some of which have a spatial data component. One such report recently told of the use of LiDAR technologies to (literally!) unearth defences from that period. Historic England, who commissioned the research, uses a variety of remote sensing methods and datasets for its archaeological work.
LiDAR derived data are incredibly accurate measurements of elevation or distance generated by highly calibrated lasers. LiDAR instruments can be ground-based or found on aerial platforms, and many of the elevation datasets created by the Environment Agency can be obtained as open data.
Some of you who have followed this blog for the last couple of years may remember the work I undertook at and for Wytham Woods, the research woodlands owned by the University of Oxford, which investigated the location of a series of WWI training trenches. That study used the same LiDAR technologies as mentioned in the link above.
My previous post on using open elevation data for archaeological investigations can be found here: https://geoger.co.uk/2016/03/01/open-elevation-data-archaeology-part-1/