Hello, Michael!
I can second Rebel's comments - this book is excellent. I purchased mine from Book Depository in UK (best prices with postage to Australia, usually).
The author is a recently retired Danish Army officer where his final job was as a senior researcher for the Royal Danish Defence College. He trained at the Royal Military College of Canada & the University of Copenhagen and served in the Royal Life Guards. This means that his military analysis is excellent, as is his English.
The book has a wealth of contemporary quotes, especially from letters between the Danish leaders of the forces in Ireland and the King & his representatives in Denmark. Much of this would be new to English readers as it comes from Danish Archives. The author has also made extensive use of other primary and secondary sources, including recent excellent publications from Childs and McNally, for example. The bibliography is extensive and all material is footnoted to these sources.
In the (rather long) introduction, there is much useful detail on organisation and equipment, though not much on uniform detail. There is a good amount of detail on the recruiting of the force, and logistics. This is followed by a full history of the Irish campaign generally from the Danish perspective, but with a lot of detail on the whole conflict. There are some true gems here - for example, on pp180-1, there is a detailed description of the force composition & plan of attack for the assault on the breech at Athlone.
The Epilogue is an excellent professional military appraisal of the force and the conflict.
There are 3 appendices - The Allied Order of Battle, the Danish Order of Battle and the Jacobite Order of Battle. The first and last are lists of units present throughout the campaign, with period of service in parenthesis in the Allied list. The Danish OOB not only lists the units present, but has a detailed list of officers from CO to troop and company level right down to cornets & ensigns!
The book has a number of relevant black & white illustrations and maps. The illustrations include contemporary maps and illustrations of sieges, pictures of weapons, recent photos of battle fields and forts, and basic maps of the major battles. It does miss out by not having a simple map of Ireland with the relevant places and geography shown, but does have a map of Ireland dawn in 1762! This is for those with good eyes or strong magnification.
All in all, a marvellous addition to the literature on the conflict and period.
Cheers, Rohan.