How to delete individual units?

[void1984]

In a campaign, when I want to remove an individual unit I buy independent marksman (that's around 11p), during the deploy I reassign the unwanted unit to the marksman's "platoon", and after the scenario's end I delete that "platoon".

Seems tedious, but ie. for WW2 German panzergrenadiers I see no other way to shrink the platoon from 4 squads to 3 (as later I'm getting only 3 haltracks for them, not 4).