As I mentioned in the previous article, to gain the benefits of Chapter Tactics (or CTs, for short), you must only use units with the ADEPTUS ASTARTES keyword and with the same Chapter keyword in a Detachment; that means no “Imperial Soup” mix and match of Imperial units. This is admittedly a bit of an inconvenience, but not one that is insurmountable by any means. Given that Defenders of Humanity has almost the same requirements, the incentive to work your list around those limitations is fairly strong.
Having reviewed the preview of the Detachment creation rules, my current guess is that it is likely that when playing common game sizes (1500-2000) the majority of armies will have something in the region of 7 to 10 Command Points (CP) available. This article will dive into army building using Detachments, and what that means to the quantity of Command Points likely to be available to you and your opponent.
Brief recap: All Battle-forged armies start with 3 Command Points, and then more can be added by adding more detachments, or by including certain units in the army. We know very little about which models or units will give Command Points other than a couple of legendary heroes apparently awarding 1 each. Assume that all armies discussed in this article are battle-forged (3 CP) and can afford one HQ or other unit of high enough calibre that it that grants an additional CP, and work upwards from that baseline of 4.