Crab CRB-27

Insignia:

The district insignia, painted on a BattleMech's lower left torso and in a corresponding spot on other war machines, is a white dagger in a red sheath set against a blue field. BattleMechs also carry the Kurita crest on the outside facing of the right shoulder, and individual regimental insignias are placed on the upper right arm or upper left leg. Aerospace fighters and conventional vehicles carry insignias in corresponding places. The regiment's insignia is a bloody scythe set against a green field. Per FM: Draconis Combine, pages 40 and 44.

Other references:
Wrath of the Common People

Notes:

The Ninth Benjamin Regulars paint their BattleMechs and other vehicles in parade colors, white with brown striping.
Per FM:Draconis Combine, page 44.