It may be more helpful to view data at the state level by coloring the counties choropleth style to show the number of casualties from each, with the ability to explore the dataset more fully by clicking on the county, and seeing hometowns.
Since casualties can certainly come from the same hometown, it would be better to have each dot represent the town itself (potentially colored or otherwise indicating # of casualties), with exploration of casualty data available after clicking the dot.
It may be more helpful to view data at the state level by coloring the counties choropleth style to show the number of casualties from each, with the ability to explore the dataset more fully by clicking on the county, and seeing hometowns.
Since casualties can certainly come from the same hometown, it would be better to have each dot represent the town itself (potentially colored or otherwise indicating # of casualties), with exploration of casualty data available after clicking the dot.