A common question on Quora revolves around soldiers who claim to be in Afghanistan, a deviation from the Nigerian scam where the soldiers used to be in Nigeria. These are scams. Easiest way to tell is they will at some point ask you for money, gift cards, or other financial assets. Here’s one example – https://www.quora.com/I-need-help-regarding-a-soldier-in-Afghanistan-Can-you-email-me.
Best to block them before they give you some sob story designed to get you separated from your money. I had a friend who was taken in by a Nigerian love scam. The guy claimed to be an officer trapped in Nigeria. She wanted to borrow money from me to help her out. I said no. I made it clear it was a scam. She knew about other Nigerian scams as she talked about them months before this happened.
As pointed out in the link, the military gets medical care, food, and access to their money while they are overseas. It’s sad that these scammers prey on the unsuspecting. My advice is always to be wary when it comes to a military member of any service – U. S. or otherwise when they contact you using social media. I had “supposed” dead friends try to convince me to add them to Facebook. As I am still friends with them on Facebook, it’s a hacker or scammer. Families of both deceased friends made it clear when they died on Facebook several years ago. If you are friends with someone on Facebook, and someone sends you a friend request claiming to be the same person, check to see if your friend is still on Facebook as your friend. If they are, it’s a hacker trying to potentially gain access to your account.
I never open videos in Facebook Messenger as too many have malware that can be hard, if not impossible, to get rid of. It doesn’t help that too many people on Facebook go with easy passwords or compromised passwords. I regularly change my passwords and use randomly generated passwords when I change them.