This book is about one of the more interesting groups from WWII. And it does a very good job of describing living in that group and some of the actions they partook in.
But it doesn't provide much context for what they did. Very little about how their actions worked with what was happening between the armies in North Africa and why what they did helped so much.
So if you want to know what life was like in the LRDG, this book is good (not great). If you want to know why what they did mattered - there's not much here.