I could see why Tesla or any production oriented company might find veterans an attractive pool of talent. They can be better disciplined, in ordinary work handle long hours, and some of it (combat) must be as stressful as things can get. We have known since the '50s from studies of returning POWs that the marines and Turkish troops were more resistant to propaganda because they were taught to fight in order to protect their buddies, not some idealistic ideological purpose like defense of democracy. Hence, teamwork is crucial in combat, as in industrial production or any enterprise. Further, they are often trained in very useful skills and more mature because more experienced at life and death.
College graduates are often faulted by business for lack of skill in group efforts. In an effort to correct this many of us insist on exercises in group effort built into our courses. In my experience, top students hated it. Wise students learned leadership skills, some from below, others from the top.
On wisdom and youth. Hopefully we make fewer errors as we age. A wise man once suggested when I worried about a woman friend who was older if she could profit from psychotherapy, "older people have fewer illusions," he said. As an example in my case as a student leader at a technical university I wanted to go to war with the Soviet Union during the tragedy of the Hungarian revolution and Soviet invasion of 1956. Though a naive engineering student I did notice it passing strange Radio Free Europe urged the rebels to continue because help from the Yankees was on the way. Eisenhower had no appetite for war with the Soviet Union though he had campaigned initially on "rolling back communism in Eastern Europe."
My disillusion with U.S. foreign policy came with graduate education and subsequent disastrous interventions abroad and at home. Some of those events were deeply held secrets at the time, though soldiers in combat may have experienced them earlier than the rest of us. That is on our leaders and a crappy electoral system, especially the part where the parties choose candidates as evidenced in the last general election. There is a serious structural problem aside from money in our system. The evil is faction as well understood by the founders. Our parties compete at winning elections, not at putting the nation's best interest first. (Nonetheless, I do not believe the parties are equally guilty of abusing public trust. In light of recent Trump tantrums using children as hostage for a border wall, my immigrant wife on viewing this tragedy spontaneously says "how can you put God on your money in this country?" Frankly, if I were a traditional religious person I would think Trump is the anti-Christ, or at least a wannabe.)
Finally, there is a sad truth about being a soldier. I know of no other profession where the business of killing is the point, although some of our police are confused on this. Equally, in the soldiering business your opponent has the same goal so you are really setting yourself up to die. I was taught that by an Israeli general interviewed on TV. When mentioned in classes, my students in the military or ROTC really disliked the idea. They will find out, not the hard way, I hope.
I'm sure this rubs many in the wrong way. However, to quote George Bernard Shaw, "The nation's morals are like their teeth. The more decayed they are, the more it hurts to touch them."