Casualties are amongst the easiest figures to make. All those Esci/Italeri ballet dancer poses are just screaming to have their bases cut off and be used as casualties, as the only way they would achieve such anatomically ridiculous poses would be to have been hit by roundshot!
I also use the good old Airfix casualties, of which I have quite a stash. Esci/Italeri figures helping wounded comrades to the rear also make good disruption or fatigue markers.