Fact: TUNNELS are the most powerful single tactic in the history of warfare.
You want to make it an absolute pain in the dick for any force that outnumbers and outguns you to defeat you? Tunnels, bro.
How did the US get pushed out of Vietnam? tunnels.
How did the US get clowned on in Afghanistan? Tunnels.
How did Israel fail to take Gaza two years into the two months into the special anti hummus operation? Motherfucking tunnels.
And when the aliens invade earth, we are going to send those ayy lmao niggers packing, because of tunnels.