The Thunderbirds chapter insignia. Based off an actual Native American thunder bird symbol I found. Notice the Raven Guard similarity.
You can see some of the trompe l'oeil I've done with armor chips. I was wary at first but I like how they've turned out.
Tamo is the newest addition to the honorable first TDA. Promoted due to his valiance during the battle of Roarchild's Folly. He stemmed off swarms of Hive Fleet Apoidea. For his bravery he was awarded Terminator Honors and a place in the 3rd squad of the 1st compandy TDA. Captain Wahkan Viho believes that Tamo will prove himself a versatile astartes worthy of songs and tales.