This review is of the TV-14 edited version of the film. All thoughts below should be addressed as such as a review of the unedited version would be more negative

It’s time for a film based on a true story. I suppose films like that don’t have to worry about spoilers as presumably you already know about it, but I still think the title could have been a little different. It sort of spoils a massive part of the movie right out of the gate. You’re waiting for all of his teammates to be destroyed so that the main character is the sole survivor but the whole film is about the onslaught so he isn’t actually on his own until the end of the film. Moreover, the title also basically confirms that he survives. I know since this is based on a true story it’s likely that he would survive but not a guarantee since a lot of tragic stories also get adapted. All I’m saying here is the title’s just a bit on the odd side with how much it gives away.
Well, the basic plot here is that an army of soldiers are sent deep into enemy territory to take down one of the enemy leaders. They need to stealthily get in there and judge the situation. Unfortunately they are spotted by a few locals and after some deliberation, decide to let them go. Unfortunately these people let the Taliban know that the soldiers are in the area and they all start to get picked off. Can they survive long enough for backup to arrive or is it all over for them? That’s the general plot of the film at least.
Off the bat I do think it’s valid to think that the heroes made the wrong move in letting the witnesses go. It does make sense that they would go and let people know which would compromise the whole operation. Your only options at that point are to take them down, tie them up, or bring them with you. I understand not wanting to go the nuclear option but tieing them up should be the bare minimum. Alternately you take them with you as you take the high position on the mountain and you just let them go once you’ve established radio contact and gotten backup. Either way you are in a much better position. The problem with waiting is that you’re not on home turf so the enemy knows the location better than you do and you’re heavily outnumbered.
It’s probably no exaggeration to say that the enemy had 5-6 times the numbers that the heroes had because the soldiers took down a lot of enemy fighters and yet they just kept on coming. It felt like there was no real end to them no matter how much ammo the heroes had. Perhaps if they were on level ground they could have managed to overcome the odds but even then it’s tough because of how heavily armed the enemy was. They had RPGs and machine guns at the ready. The heroes had a lot of ammo and several guns but it’s just hard to fight like that. You’re basically going up against a mini army.
The only time the film isn’t focused on all this action is really the intro act where the heroes are getting ready to be deployed and they all have a little fun. It’s nice that we at least got to see them having a bit of fun before everything went south. There are also the brief meanwhiles to the army base but those are always brief. You do wonder how come the army doesn’t have better communication technology in this day and age though. Using satellites and such you’d expect them to be able to reach home base in any area. Not being able to make contact at all feels like it would ramp every mission’s difficulty up a whole lot. If you can’t call for backup or extraction you’re close to turning these into suicide missions.
The brass apparently knew from the start that there could be communication issues as well so it’s not like this is a big surprise or anything like that. It was expected which probably makes this even more tragic all the way around. If there was ever something that deserved a ton of funding, it’s definitely making improvements to that technology. It also feels very feasible so even though this film’s based on events that aren’t super old, I would imagine this would no longer be such a cause for concern in the present.
Overall, The Lone Survivor is definitely a very intense army film. Don’t expect a whole lot of happy scenes here or much cause for celebration during the adventure. The majority of its runtime is really about the heroes being brutally beaten and killed as they do their best to survive for as long as possible. The film doesn’t hold back on the violence at all or the desperation that the characters are feeling. If you’re curious about the real life events then it makes sense to check out this film but it also may just be easier to read an article on it instead. It’s not really my kind of title and just makes for a very dreary movie as you watch it through. Even the ending isn’t what I would call all the way happy because ultimately this came at a super high price.