Do Sonic tanks cause Friendly Fire?

Solution 1:

Yes, if your unit is in line of fire between Sonic Tank and target, your units will take damage. Exception is other Sonic Tanks. They are not damaged by Sonic Waves.

Source(s):

  • http://strategywiki.org/wiki/Dune_II:_The_Building_of_a_Dynasty/Units#Atreides
  • Personal experience