The whole concept behind this list is what would happen if a guard regiment/world was conquered/persuaded by the tau. The guard work with the tau, who send a small force to keep the gue'la in check, hence the
IG are the primary detachment. If you wanna see some of the fluff reasons behind the choices, check out this thread
http://www.dakkadakka.com/dakkaforum/posts/list/588638.page
Anyway...
HQ
CCS-Vox, Carapace,
PG,
LC team 110
Elites
PBS-8 Psykers, 1 Overseer 100
Troops
Platoon;
-
PCS-Vox,
AC team 45
-2xPIS combined-1 Vox 105
-2xPIS combined-1 Vox 105
Platoon
-
PCS-
HB team 40
-2xPIS 100
-30 Conscripts 120
Veterans-2
PG, Grenadiers 130
Chimera-exchange
ML for
HB 55
Fast Attack
Vendetta 130
Heavy Support
LR Squadron:
-
LRBT 150
-Exterminator 150
-Eradicator 160
Tau Allies
Ethereal-Shield Drone, Marker Drone 74
12
FW-Shas'ui w/Markerlight and Target Lock, Shield Drone, Gun Drone 167
Crisis Teamx3- 2 Fusions (
TL Fusion) and a Flamer each 141
Piranha w/Fusion Blaster 50
Broadside-Advanced Targeting System 68
Please note I have never played tau or allies before

c+c welcome!