I think it depends very much upon the context of the discussion and its audience.
A blowhard at a bar, whether in a veteran’s club or just a pub, regaling his audience with tales of derring do (usually special forces or some great deeds of valour) is probably full of shit.
But in other circumstances it will be true, without reflecting any glory on the speaker.
I will always remember a teacher of mine at night (high) school who took me aside after a class I had to attend in army uniform during the Vietnam War because of a timing problem between army and school. He had been in New Guinea in WWII. He impressed upon me the corruption of war and what it does to the men who die, are wounded, and who survive on both sides, with graphic descriptions of the sadness of dead men’s papers and photos of family and loved ones left on the battlefield after the routine examination of dead. He was trying to tell me that it was all a terrbible waste and not to get invovled in it, but to aim for higher things for mankind. It gave me pause for thought but overall at the time had about as much effect as me telling my son to drive carefully. Now I wish more people could listen to him and understand his message.
I have had other veterans of combat in WWII, Korea and Vietnam tell me about aspects of their wars that were appropriate to whatever discussion we were having, but never in any way that made them out to be heroes or glorified their combat experience. The one thing that was always missing was any detail of combat as such, although related issues might be discussed. For example, one bloke told me how he hated having to go out in New Guinea to find and repair the break in a field telephone line which had been cut by the Japanese who were waiting for him and who on some occasions might have killed the bloke who had been sent out before him, but he never said anything about more active engagements he had been involved in.
No doubt there are people who glory in killing others but, as Nick said in his last post, my impression was that there was a regret about having to kill other people and even an unwillingness to admit it. A mate of mine who served in Vietnam assured me on several drunken occasions that he was pretty sure that he had never shot anyone despite having a bloke lined up beforehand in a particularly heavy engagement, but it seemed to me that he was trying harder to convince himself than me that he hadn’t done it.
Against that there is no shoratage of soldiers who have killed and will kill people as part of their job, but it is still not something that a professional soldier necessarily enjoys or glories in, any more than a forensic pathologist welcomes the death of a murder victim upon whom he practises his profession. It’s just something that has to be done as part of the job.