And to add something to THobson's example:
When you place the bmp and the soldiers grouped to it, set the SPECIAL field
of the soldiers to: in cargo
and try without typing the code into init field.
That would do the job aswell and you should find the soldiers in cargo of the bmp.
Sometimes the power of the ingame editor is amazing and lot of things can be
done without opening any notepad for making a script.
~S~ CD