From a military viewpoint,
these scalar EM weapons are really quite all-around weapons. For
example, they are very lethal against personnel.
Set in the "high intensity pulse mode," one blast and a person's nervous
system is destroyed instantly. Total, instantaneous death results. One
can blast away at entire groups of infantrymen, for example. It's the
peak power that's important, not the average power. So the weapon
doesn't require too much battery power.
Set on a lower intensity pulse mode, one zap can simply knock out a
person, rendering him instantly unconscious. Quite useful if one needs
prisoners to interrogate. Also very silent, which is useful in
operations employing stealth and surprise.
