A handy little book which covers a little known topic of bugle calls. The CD rom ALONE is worth the modest price of this guide. It has great thumbnail back ground information on bugles of the period and regimental bands. If you don't know the bugle calls for fix bayonets, halt or commence firing!, then by all means, you should buy this book. This is great professional book, that is written by reenactors FOR reenactors!