Hector pretty much nailed what I meant in the article: I used the source we got at Burro and Fort Irwin to build a large collection of battle elements such as weaponfire, explosion samples, mortar-bys, etc. (at various distances), then used Kontakt to perform them into Nuendo ambience sessions. This saved a tremendous amount of time in the long run over what would have been the tedious task of individually cutting hundreds of weaponfire bursts/tails, single shots, artillery, mortar-bys, and so on. Performing the elements via Kontakt (and using a lot of variations to keep anything from getting stale) resulted in natural-sounding background layers created very quickly. Other samplers can of course be used in the same way.
Kontakt is a very powerful piece of software which I barely scratched the surface of on MOH. I don't have any experience using it for ambience synthesis (I've used Reaktor rather than Kontakt to create occasional synthy, electro-sci-fi elements), but it was very useful for the above.