The Ukrainian army attacked the Russian army for the first time on 24 August with a new weapon, the Palianytsia drone missile. [Palianytsia is a traditional Ukrainian bun; this word is difficult for Russians to pronounce correctly, so it is used as a shibboleth – ed.]
Dang yo, flying a drone at 90mph is wicked hard, flying a missile the same way at mach speeds is insane.
So basically, instead of the programming to direct the missile to the programmed target (gps location, laser, intertidal, ballistic, whatever) the operator has direct input to the missile. Meaning they could fire it, have it fly around a mountain and hit the enemy position from behind
Most fancy missiles do that already. You could teach it the map of the area and tell it to follow a river bed for such and such time then head to target, for example.