I can’t decide if this is a great companion to Mongoose Book 1 Mercenary, or a better version of it. It just reads like a more complete look at day-to-day life for Mercs. Also includes an entire subsector (in Foreven), a new alien race and an adventure. Layout and typography are really slick, very well organized, and a must for anyone incorporating the military into Traveller (not just Mongoose, but looks tot be useful for Classic as well).