[scorpio_rocks]

Not at PC so havent yet run your save, but is this because K0, L0, etc have had their "0" unit killed at some point and K2, L1, etc have taken over? (this is borne-out by the fact that the "0" are led by corporals and the others by officers).

The "0" unit is only the platoon command squad at the start of the campaign - losses to these units mean that surviving units x1, then x2, etc become the platoon leader. Look on the Head Quarters screen the P (and C) before some units designate which are Platoon (and Company) Leaders.

This can be "fixed" between battles on the HQ screen by pressing the relevant button (CD only IIRC)