Benjammin, you’re thinking conventional warfare.
They have to exit a tank eventually.
They have to shop for groceries, as do their families.
A .22 sailing in from two or three blocks away doesn’t have to kill to create terror.
The “”insurrectionalists” don’t have to be as well armed, just make it so costly and miserable that they avoid an area completely I.e., they have to expend an outrageous quantity of men and material in it that isn’t worth it.
Think outside the box.