Airport, as a cheat(bug airport) (Sid Meier's Civilization 3)

I do not know whether this subject on the forum - search not found
______________________________________________
-choose unit
-lead him to a friendly airport
-I press (G) go to: choose your location
-click the button parachute
-deliver unit anywhere you like (oceans sea enemy radar towers, etc.)
if dropped into the ocean where he can't go until pick up trucks.
if you throw in an enemy city it will not be captured, but the unit will remain there.
when I learned about this transfer, just dumped a bunch of tanks near the capital of the enemy, but he (at that time the most powerful AI) interrupted them during your turn.
loaded, thought and made smarter: threw the same bunch in the very capital.
in this operation one important fact. it is necessary not just to transfer troops, you need to hide them for a more powerful defensive unit which must be located in the city of the enemy.
for example:
if you take
modern armor 24.16.3 and relocating him to the city where there is
ifantry 6.10.1. accordingly, your modern armor has to be the top. therefore the AI will start to attack it.
output:
if you take
modern armor 24.16.3 and relocating him to the city where there is
mech ifantry 12.18.2 then his unit is on top. ie you can hide your unit so to speak for the enemy's back, and AI himself the attack will not.
unless of course both equally of the lives of units(e.g., both veterans)
and if you throw elite in there where there is a veteran, then your unit will come from above and attack. (I mean about the above example)
so after I moved their tanks into the city and he did not attack for it is not in Idel them. next turn I brought the tanks from the capital and attacked it the same unharmed tanks.