I’m in the middle of _Children of Strife_ right now and I’m not sure I’m going to finish it. Children of Time was great, Ruin was ok, Memory was saved by the ending, but Strife has up to this point been two female protagonists getting tortured and/or abused in various timelines, some of them possibly simulated. Not a great read.

Perhaps he means the Final Architecture series? Shards of Earth, Eyes of the Void, and Lords of Uncreation. That series is a true favorite of mine, but not everyone I've recommended it to liked it as much as I did.

Elder Race and Dogs of War are also awesome entry points for people who enjoy S&S fantasy and military themes, respectively.