This is just an English translation of my guide, which I wrote a long time ago in Russian. I don't know both English and Russian well,(At least when I wrote the guide, I didn't really know Russian yet, but now I'm a little better.) even then I wrote through a translator, now I also write in English through a translator.
I do this for those who speak English but do not know Russian. So that people from other continents know about this method.
I hope because of the number of possible grammatical errors of translation via the Internet, your eyes will not leak out. Well, let's get started....

So I went through the old missions, so that everything and everything would shine with the S rank and all the stages were passed.
Usually I took the best and most expensive guns on missions, the helicopter was improved as much as possible, etc.
The main problem of such a game is that sooner or later there will be problems with GMP (you can go into the negative because it is not directly critical, BUT the efficiency and morale of soldiers at the base will fall)
Basically all my expenses were for using Fulton and calling a helicopter.
Well, I thought I should save money...(probably one of my stupid ideas, since you can probably do without it)
I had a rule-to dismiss all employees A+ and below from the base, whatever, since the place is occupied and you can find people better.
Therefore, on each task, I evacuated a HELL of a lot of soldiers with the skills and ranks I needed, which is why I often went almost into the negative.
I started taking soldiers to the helicopter in a 4-seater jeep, as Fulton spent only on resources, weapons and transport.

Then I thought: Why do I need trucks at the base?
I don't take them on missions. No cargo needs to be transported. I just took them away once on a mission, and they are gathering dust at the main base, where my soldiers use them only on external tasks.
I thought that there are clearly more than 4 places in the trucks (NOPE, there are 2 of them)
, BUT why put soldiers in empty seats if you can just put them in the back?
That's right, I just collected a bunch of soldiers and stuffed them like sandbags into the truck.
I also discovered (by accident) that it is possible to evacuate the truck together with the "Passengers"
I have already filled the truck, about 40-50 people sleeping from all over the map and instead of getting into the car... I evacuated her with Fulton -_- I thought, WELL, MY 4 HOURS OF SEARCHING FOR PEOPLE HAVE SUNK INTO THE ABYSS! And all the soldiers will crash, because Fulton collects only transport during the evacuation of transport and there are no people.(As it turned out, everything was simpler... It's just that most of them were
badly injured and would not have survived Fulton, which is why they fell out of transport ...)
And everything is much better! Transport also takes "passengers" with it during evacuation!

We take a person into our hands,(I immediately checked on children) we come close to the back of the truck and throw it right into it.
It may not work right away, but it should work. As we collect as many people as we need,
we simply evacuate the truck with Fulton.
As a result, we will see that all these people have been evacuated.
That's all!

As I have already said, the people who were badly injured, they will not survive the Fulton evacuation. Also, when people are already in the car, when you throw new ones, the new ones stun and injure the old ones...
The First Solution.
Completely clear the location from the soldiers (not to kill but to stun), throw the ones you need into the car, and evacuate the car. To wound a person to such a state that evacuation by Fulton, where he will not survive, you need to throw 15 more soldiers at him...(approximately) So when we collect 14 soldiers in the car, we simply evacuate the truck, order a new one (take the remaining ones if there are still any) and go to the next location for the next soldiers.
The Second Solution.
If you already have the Fulton wormhole upgrade, then you can throw up to 30-40 soldiers into the truck, since with this upgrade Fulton will not care about the wounds of the soldiers.

In fact, while I was doing this guide, I saw that there were people who had already pulled the same trick with a Jeep before me.
So this is not something "New", it is rather an optimization of that method.
Since you can send an infinite number of people at a time, and not 3 as with a jeep.
I haven't seen the same method on the Internet yet, if anyone has seen it, write in the comments and leave a link.
Since if someone has already done it before me and I came up with it myself without knowing that it was already open. It will be funny for me personally to look at it.(After all, I fell under the phenomenon of "Multiple discovery")
Thank you for your attention, bye.