This book is the 6th anthology of short stories set in David Weber's Honorverse, and I found it as fully engaging as the rest of his books. This anthology features short stories that are set earlier in time than the main arc of novels that make up the series, and the stories tend to flesh out many of the characters in the series. Although there are several authors contributing to the anthology, all of the authors have a voice that mesh with the originator of the series.
I would recommend this book for those readers that feel comfortable with hard science fiction, but it would likely be enjoyable by those that just like a good story. While it would be helpful to have read the Honor Harrington series, these short stories are accessible as they are.