There are some big changes to these especially if you play with a lot of Marksman.. or Russ. Lots of great changes here (I have not read through it all yet) so jump in and see the latest Errata and FAQ for the Horus Heresy
See them here..
The Horus Heresy: Age of Darkness - General Errata and FAQ: https://goo.gl/LoiJJr
The Horus Heresy: Age of Darkness - Drop Pod Errata: https://goo.gl/wdZSdk
The Horus Heresy: Age of Darkness - Legio Custodes Errata: https://goo.gl/QEMKuy