At any point, a drone that you often can't hear or see can drop a grenade or mortar shell that might kill all your squad but leave you unhurt. Or kill one person next to you in the trench. Or your vehicle may just explode with no warning.
Sure, it could be argued that is not "worse" than other wars, but how will these veterans react to drones in the sky back in civilian life?
> The psychological effect of the V-2 was considerable, as the V-2, traveling faster than the speed of sound, gave no warning before impact (unlike bombing planes or the V-1 flying bomb, which made a characteristic buzzing sound). There was no effective defence and no risk of pilot or crew casualties.
I wonder what the defining moment of drone combat will be? The equivalent of the Battle of Agincourt where English longbows devastated the opposing French force.
French tactics were so bad that it is said that the English were looking in amazement how we were basically fighting with ourselves (cavalry vs retreating infantry)
Today you can get killed even far away from the front in a place that was considered mostly safe in previous wars.
The psychological effect today is much worse than anytime in history.
I'm not aware of them being used to summon the fire department and don't think that's very common outside maybe extremely rural areas. AFAIK volunteer fire departments use mobile phones.