Done in an OC session a few days ago.
With the growing number of fielded Elemental soldiers the empires have put special priority on developing anti-shield tactics vs light armor. Aside from the blunt measure of surrounding and drowning an Elemental in a barrage of cannon fire, special weapons have been developed. These weapons are too costly and ill used against non shielded opponents, so are only deployed when in need.
Enter elementals equipped for quiet deployment, up armored and conventionally armed to strike as deep as possible without being detected as priority targets. If things get too hot, shield generators are spun out of standby and their real power is unleashed. Running silent is very risky, but the key is the gained element up surprise.