I'm an amateur fighter so my utilization of this book/program will solely for the purpose of combat sport training, other people might have different opinion on what is written here.
This review does not indicate the efficacy of the program. If you're looking to know if the Tactical Barbell program is effective, there are other sources of proven results all over the internet. This is only for the presentation and the material discussed.
Tactical Barbell dispelled a lot of misunderstanding for me when it came to strength training. I've lifted on and off for years and while I did get stronger, looking good had been my chief goal. Earlier in the book, K Black differentiated strength gain and hypertrophy, the latter referred to size gains only. For the "operational athlete", as in those who participated in other sports where strength training could be beneficial, or the folks in the professions in which strength is not only recommended but paramount. Soldiers, firefighters, law enforcement officers and on the end of the spectrum, sprinters, football players and combat sport athletes.
As an amateur fighter, I used to be on the fence about strength training. There is an old myth in the martial art world that weight lifting makes you slow. This myth is fortunately dying out due to more fighters utilizing weightlifting as part of their regimen. For regular strength work, I often did explosive ply excercises like box jumps, lunges, medicine ball slams and some kettlebell. I never had a solid strength training schedule and sometimes the disadvantage is glaring.
The book recommends different templates for different goals and lifestyles. Everything is adjustable however. Just because you don't fight doesn't mean you won't benefit from the Fighter template. In fact, many people who had used and succeeded with the program are just average people who don't have a whole lot of time to spend the gym. The edict is true here: train smart, not hard. If the regimen is followed, a person is unlike to spend more than 1 hour lifting.
The general advice the author gives is take longer breaks during in-between sets, and never lift to failure. The fighter template, which I'll use because it allows more time for my regular training as well, involves starting with 3-4 sets of 5 at 75% RM, gradually increasing to 3-3x3 of 90%. Each of these "block", or training cycle, is a minimum of 6 weeks, although he recommends a 12 week block. At the end of each block you would retest to get your 1RM, and change cluster (exercise types) as you desire.
Other templates exist for other goals/lifestyles. Gladiator promotes the highest strength gain with little yield for other athletic activities at 4 days per week. Operator is the perfect balance between the hardcore Gladiator and minimalist Fighter at 3 days a week. To reiterate, one should never lift more volume/weight than the program prescribed because those numbers are there for a reason. And given that all of the lifts you will perform will be compound (deadlift, bench press, overhead press, squats), overtraining will place your CNS under enormous stress, prolonging your need for recovery.
Overall, I like how brief and to the point the book is. Everything is clearly explained without using difficult jargon, and how much less demanding and complex these regimens seem compared to the traditional hypertrophy workout makes it a perfect fit for people who want to maximize their strength for whatever purposes.