Not to be a stickler on this, as it's a little hard to see specifically which slice of this topic you're going for, I just want to impart a bit what a military scholor of the subject once told me about this subject, and the differences in terms of evolution, derailment, and misappropriation.
"Evolution in warfare" is a bit of an illusionary concept when discussing the weaponry, as mankind is inherently barbaric with any kind of weapon they have. "Evolution" would be where mankind realizes that their weapon hurts others, and makes rules regarding their use, writing up fair rules of combat. Flamethrowers, mustard gas, etc. are examples of weaponry that was deemed "uncivilized", and the Geneva Conventions are a good source on this if this helps your topic.
It could be said that nuclear weapons
are the ultimate evolution of weaponry, because most civilized people abhor their use, but it was the scholar's opinion that it was due to not being able to get the supplies to make one and use it effectively that has limited the number of warfare nuclear detonations to 2. Or it could have been possible that not even an Islamic fundie is stupid enough to start that kind of warfare, as his ass would literally be glass. As Carlos Mencia said...the terrorists threaten to use nukes and similar...but guess what? We already use them, and if you don't agree, call Japan and they'll put you in contact with a man with five penises and three balls.
Derailment is when a corporation influences the govt. (and by proxy, the military) into doing something that would benefit the goals of the company, and misappropriations are how a company illegally acquires civvy contracts at bloated prices and otherwise war profiteers.
I would rather think instead of "evolution" in connection with corporations, I would think another term would better suit it, as "evolution" has progressive connotations to its usage. Corporate war profiteering would be a far better example, at least for the latter years, if you're discussing modern company involvement with getting preferred deals. For a "Pride of America" example, check stateside WWII industries and how women worked in them to help the war effort, as it was a war that the US people could get behind and support, and did so throughout all forms of media.
Speaking of media, do some parallel research on that, as the cartoons then and now are a good example. Media is an industry, and can also be considered a corporation for sake of this topic. Many of the WWII Bugs Bunny and other cartoons have been censored from general public view, which can still be found on eBay and other sources, and many cartoon characters have had some war statements. Mostly, they were censored for political correctness. Now, I wonder if they will censor today's cartoons in about fourty years, when our jokes about the war are similarly ignorantly considered irrelevant and tasteless, or just kind of try to forget it ever happened like with Nam.
About corporate-funded private militaries, well...the best example might be the Sea Organization of the Scrotumtologists, who are deadly with a well-aimed lawsuit.
Others have given a good example of what goes on with mercs and other organizations, who are thankfully relatively politically unconnected so someone can have an effective operation without too many political restraints.
