This is only scratching the surface but does provide a range to the extensive military engagement involved.

Globalization is apparent, maybe not her but I have seen records of O’Sullivan enlisting c 1770 in the service of the East India Company from some of the most remote townlands in Beara. Sometime around the late 18th century and early 19th century travellers comment that despite the extreme poverty unlike England or Scotland there is an extreme reluctance to enlist.

https://docs.google.com/spreadsheets/d/1o4eyPoZiqVvVdDf7bvyJ8lrgLFJQjwS1jeg4QvT6l08/edit#gid=0