haaha, I'd take a look to, I guess it's just curiosity as you said. I've always watched war movies, footage, documentaries etc since I was a kid. Especially WWII stuff because I just have a need to know what that madness was like. I had a Grandfather and a great uncle who fought in it but they would never say a word about it (I was young when then passed). now that there are camera phones and gopros everywhere, there is an abundance of combat footage for the first time.
Oh, I'll watch war movies too. No big deal here. I especially watch Vietnam War movies (not Platoon!!!!!!

), plus study the war in deep detail, not just to get a "sniff" of what my Dad did, but to learn what not to do politically.
Your GrandDad and Uncle fought a REAL War, and etched history. You're doing genius-level, common sense stuff finding out what they did. And with today's technology and a few dollars (not much), you can really drill down, and find some cool stuff. A family member did that recently, and has actually found too much information (lol), meaning sorting through, and separating.
As for the smart phones, and all the other cameras stalking the globe, all I can say is they're a double-edged sword. On the positive, they're able to capture the most amazing, quality of life enhancing images/videos. On the other end, and IMO, they can be deadly in smaller cases, and extremely harmful* on a macro level.
* This list could go on for days as to the emotional issues that are 'possible' outcomes from viewing things such heads being sawed off.. From what I've learned recently, it's often underscored just how powerful images are when absorbed into the human brain vs other senses. Knowing that, we now have 6,000,000,000 people viewing images on the web vs a little over 20 yrs ago when the number was zero. Have we gotten considerably "happier," and less stressed since then? Think we've gotten any "nicer" across the Globe since? Hmmm...
Almost forgot, you mentioned something about violent clips that I couldn't find this evening. If it was about the clip I posted a page back, about Marlon Brando's character in Apocalypse Now, that wasn't a violent clip. His descriptive story is, however, not only "mentally violent," It's a look into the mindset of a truly determined enemy, and IMO, a very important observation.. Once you watch it (or hear it), I believe you'll be able to peer much deeper into just what kind of enemy we have with these "moos-lums." They're not far off from the mindset "Colonel Kurtz" spoke of...