Hello everyone. I've been meaning to post a list up for a little while now and am finally writing it up.
I spent the majority of my time as a Tau player running a zero Railgun list with first
TL Flamer/ Fusion Blaster suits as anti-tank (along with Pathfinders for added reliability), this morphed into a 5 strong Piranha squadron with some target locks/Disruption pods and each with a Fusion blaster and Flachette discharger. The list has finally turned to Broadsides as It hit me one day that my Piranhas were each more expensive than a Broadside and had only minor benefits over Broadsides in terms or Anti Tank (which were more than compensated for by range etc...).
The rest of my lists have morphed as well over time. The only real constant in my lists is that they always included Pathfinders when I had finished. (as far as I can remember of course

)
My list's history finished. The list is as follows.
HQ
Shas
El:
Plasma Rifle, Missile Pod, Multi Tracker, Airbursting Fragmentation Projector, Drone Controller with 2 Gun Drones, Bonding Knife
132
Elites
2 Crisis Suits:
1 with Team leader, Plasma Rifle, Missile Pod, Multi Tracker, Drone Controller with 2 Gun Drones, Failsafe detonator
1 with Plasma Rifle, Missile Pod, Multi Tracker
164
Troops
10 Kroot
70
11 Fire Warriors:
10 regular Fire Warriors
1 Shas ui
120
10 Fire Warriors:
9 regular Fire Warriors
1 Shas ui
110
Fast Attack
8 Pathfinders with Devilfish
7 regular Pathfinders
1 Shas ui
1 Devilfish with Multi Tracker and Disruption Pod
201
8 Pathfinders with Devilfish
7 regular Pathfinders
1 Shas ui
1 Devilfish with Multi Tracker and Disruption Pod
201
Heavy Support
3 Broadside Battlesuits:
2 Suits with Target Lock
1 Suit with Team leader and Drone Controller with 2 Shield Drones
250
3 Broadside Battlesuits:
2 Suits with Target Lock
1 Suit with Team leader and Drone Controller with 2 Shield Drones
250
Total 1498
The basic things that should be known about this list.
The Shas
el and Crisis suits go together, the Bonding knife is not necessary and by taking it out I could add a Kroot hound. I am thinking of this and the Knife is there just in case. (it also helps some with using the failsafe detonator as they are most likely to be falling back under half due to the combat leading to it's usage) Any opinions on this would be appreciated. The drones are Gun Drones and not Shield Drones because of cost. The Difference is not too major though and it does add some firepower.
The Crisis team has a Team Leader with the Failsafe Detonator and second group of two Drones. These Drones would be the first to go in most situations to minimize losses due to the Failsafe Detonator. The Detonator itself is their to allow the Squad to absorb assaults from enemy units, protecting things like Fire Warriors from fast moving enemy units among other things.
The Squad as a whole plays fire support, usually shooting at light armour as the Railguns attempt to deal with other targets. After they finish this they move on to either plinking away at infantry or moving up to add plasma and the AFP. Unless ample cover is provided, the Squad should generally stay behind the 2 Devilfishes for cover, spread far out to minimize blast hits.
The squad may also Deep Strike although this is to be avoided in most circumstances.
The Kroot squad is a backfield objective holder, there to allow the Fire Warrior teams to charge into the enemy lines without having to worry about coming back for turn 5. They also act as bubble wrap for Broadsides and Pathfinders (Snikrot is a big factor here) although it is unlikely they will be able to protect all the units in my backfield. Their other major use is to push back the enemy's deployment in Dawn of War.
The Fire Warrior teams use the Pathfinder's Devilfish. The Devilfish act as mobile cover for the Crisis suits, and act as transportation for Fish of Furies with the Fire Warriors. The Fire Warriors have Shas ui upgrades for the leadership boost which is significant for Tau. Going to Leadership 8 from leadership 7 gives 14% increased chance of passing a leadership check. (with no modifiers) Generally the teams will stay back in the Devilfish (which they usually enter turn 1) until the Broadsides and Crisis Suits have softened up the enemy. Optionally the Fire Warriors can contribute to this, firing at range until it is time to mount up and go on the offensive.
The Pathfinders are a major part of the backbone of this army. Not an auto lose to killed, but they are a significant factor when facing many armies. The Pathfinders will usually Markerlight a hard enemy vehicle that needs to be damaged. The first team of Broadsides then fires into this target while splitting fire onto one or more likely two other targets. The team will then usually use two Markerlight hits to increase their
BS to 5 for a 35/36 chance to hit, this increase works even on the Broadsides that fire on other targets. (as far as I can garner from the rules) The second team then usually fires on the same target and splits fire onto undamaged targets leaving the second team of Pathfinders to lend markers to the Crisis team's shooting. Optionally, (when cover is an issue) both teams of Pathfinders can be used, one for each squad of Broadsides, usually decreasing cover saves by 3 and increasing
BS by 1.
An interesting point on the use of Markerlights is that when cover is an issue and you don't have enough markers to completely remove cover and max
BS, try to keep odds of a favorable result on your to hit roll and your opponents cover save equal for maximum benefit. Example marines with 4+ cover versus a
BS 3 Fusion Blaster and 2 Markerlight hits. Increase
BS by 1 and decrease their cover save by 1. Also it is better to both remove cover and boost
BS on one squad than boost
BS or remove cover on two.
Broadsides stay in cover and spread out in a line in most cases to minimize blast damage. Shoot as detailed in the Pathfinder entry above. I know that Dawn of war costs me a turn of shooting and I suffer from a lack of mobility with this setup but it seems to maximize killing potential.
If you see any ways to save some points for the 3 Fire Warriors I have taken out please point it out!
Any criticism is again welcome. If you think you have a list that will beat mine post a link or put it up! Sorry about the wall of text and thanks for reading.