We are only at the start of a change in military technology putting the introduction of indirect fire artillery, the machine gun, and barbed wire - aka 'The First World War'

The Air and Missile War in Nagorno-Karabakh: Lessons for the Future of Strike and Defense

As numerous recent reports have argued, these [drones] were game-changing. Azerbaijani drones provided significant advantages in ISR as well as long-range strike capabilities. They enabled Azerbaijani forces to find, fix, track, and kill targets with precise strikes far beyond the front lines. UAVs were operationally integrated with fires from manned aircraft and land-based artillery but also frequently used their own ordinance to destroy various high-value military assets. Open-source reporting suggests that drones contributed to disabling a huge number of Armenian tanks, fighting vehicles, artillery units, and air defenses. Their penetration of Nagorno-Karabakh's deep rear also weakened Armenian supply lines and logistics, facilitating later Azerbaijani success in battle.

The Armenian military was the standard Cold War mix of tanks and armored infantry backed by artillery.  Azerbaijani drones ripped it to hell and gone.

But the Military Industrial Complex marches on:

Yet while drones played a large role in this conflict, their capabilities ought not be exaggerated. These platforms are very vulnerable to air defenses that are designed to counter them--defenses Armenia did not have in adequate numbers.

And elan and Will to Combat can overcome machine gun fire.

Bah

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre