As far as I can remember I've never seen Morek or Iashalur troops nor Libero Empire or Farronite. Astrum and Corsanctum made it 1 region south of D'hara IIRC.
Morek has lost one army making attempts to sail to Aurvandil and two other armies in the Paisly area to defend the city.
Iashulur also sent a sprinkling of nobles south to aid in the attack on the Italian Paisly Puppet.
Corsanctum and Astrum have both sent forces a number of times to aid. Most recently just this last week. Corsanctum to Celitberia and Astrum to the Falkirks.
Farronite Republic has sent forces as well. Most recently this past week in Celitberia.
So... yeah. Again, this is a pointless discussion because every realm has indeed sent forces to the war effort. All of them.
I play the General of Terran, I would know.