in
[251.2.2] “Boom!:”
1. Finally, draw back that same amount of Partisan Detachment markers from that Faction's pool, minus [1 (for the attack) + the number of Ground unit steps from other Factions and functioning HQ markers in the attacked City hex; these represent the partisan’s losses in personnel, materiel, and cohesion], but never fewer than 0. Place them normally (per 251.1.1), but also within the Territorial Range (i.e., 3 hexes) of the attacked Cityhex (i.e., in the vicinity of their attack). They need not return to their previously-located hexes (this is, in effect, how Partisan Detachment units “move”).Eliminate any returning Partisan Detachment markers that cannot be legally placed.
Am I reading this wrong "but the never fewer than 0" I think the wording is poor and needs to basically say less than zero is zero.
Just noticed this in the rules vol-2 vo-45 TMS
You're right, Kirk. In practice, there will only be one Partisan attacking a spot that would destroy 3+.