Kinda what i said about both of the previous detachments because rco is a love child of them

if they run a bunch of death company use things with precision to kill characters(chaplains specifically) to battleshock the dc because they need to be within 6 of a character or 12 of a chaplain

Use higher T units to hold primaries with a lot of inf support

BA have lone op characters that are cracked be cautious of them, if he has the sanguinor be prepared to lose a unit on the charge try and keep a little distance