I have three crisis, each with a plasma rifle and a missile pod. they stay just out of assault range, hidden behind some cover. all my fire warrior shas'ui ( or is it shas'la? oh well ) have a marker ( one per crisis weapon ). Against marines, it's better to have a many smaller squads than a few big, so I can buy my 6 markers. during my turn, movement, the crisis go into firing position, shooting, the firewarriors designate the target, the crisis kills them ( and the plasma rifles with their range have about one more turn to shoot, which gives them one more chance to go through the armor save ). assault pahse, the crisis uses their jetpacks to go back to cover. sure, crisis armors are weak. but they're fast, DAMN fast

if this doesn't work, all my fire warriors jump into the devilfishes and go to the other side of the table, and start again. if I know the guy I play against will have heavy stuff like dreadnaughts or land raiders, well, I buy less stuff for the fire warriors and the crisis, and place a squad of broadsides. the hammerhead with a ion cannon is a superb space marine killer, btw. Always give the hammerhead seeker missiles, they're less expensive. as you'll never use this weapon anyway ( with the upgrade, you can move and shoot with the main weapon, so your opponent needs 6 to hit ), well, it helps you save some points

note: of course these are good only for melees, for scenaries, you need to adapt your army.
Overall, there's a lot of tricks with space marines, of course you won't always win, but for now I have a ratio of about 50/50 against them, which is excellent against those dudes, btw.
How do you play your tau, Shrike? I'm always interested in learning new strategies
