Just a fun aside: when Canada invaded Afghanistan, there was a lack of the arid variant of CADPAT. It left soldiers to land in the brown and tan desert wearing vivid green camouflage designed for summer in the Canadian rain forests.

>I find it bizarre that this is all done by private companies, competing in public competitions, with royalties to be paid for the chosen design. And I'm quite surprised that some designs were found wanting because they don't work under IR (e.g. the soldier shines against the background). That sounds like they're using the wrong dyes; surely a decent design methodology would lead to such problems being remedied by incremental improvement?

It was fixed AFAIK. IIRC issued CADPAT clothing were controlled items in 2000's because they had the the treatments designed to work against near infrared. Civilian CADPAT lacked those treatments so companies like Tru Spec[1] could sell it on the open market. There were other teething issues I am aware of; the dyes bleeding into splotches instead of the digital pattern as called for, as well as fading issues after laundering. Fixed of course but it took some iterations.

[1] I just double checked, Tru Spec never sold it. There were some smaller outfits in Canada that produced CADPAT available on the civilian market for short time; Drop Zone Tactical out of Edmonton for sure was one. Rumor mill is that it was material made by Consoltex under military contract that failed to meet the military's specifications and sold off to licensed DND manufactures to recoup costs.