Hello!!!

[Shieldmaiden]

well you will be unpleasantly surpirsed...they don't work

Really? I suggest you test this in a Custom Battle to see for yourself. You cannot Testudo while being fought hand-to-hand, and even if you could it doesn't negate the Head Hurlers reducing Morale effect.

A Cohort is simple to Rout, with certain tactics.

my cohort testedo fromation will stop any other ranged assult

With Britons, the key is to use Chosen Swordsmen (or similar) to engage the Cohorts and break up the Testudo while Head Hurlers throw from behind. I use Warhounds too, they can be useful to break a battle line for a Heavy Chariot or Swordsman charge, and to stop the Cohort throwing their Pilums.

for my archers are more then a match for head hurlers

Chariots and/or Cavalry Mercs are used against Cavalry, Archers, and Elephants as the Briton battle line moves to take on the Cohorts. They then join in firing upon the Cohorts.

I would be interested in hearing the specific tactics you'd adopt. It'll help me improve my own battle plans