The true cross was lost to the Persians, then regained by Emperor Heraclius. It was never lost to Saladin. And parts of it had already been spread about the world by the time of Heraclius.
As far as anyone knows, the various pieces of wood around the world purporting to be bits of the true cross are bits of the true cross.
Thanks. I was pretty sure that the Crusaders were using a "True Cross" as their battle standard. Not being 'up' on religious iconography I didn't know if it was supposed to be intact, incorporate a piece of the (true) True Cross, or was 1 of those purporting to be THE True Cross.
You've sparked an interest. I'll read-up on the subject.