What is a Roman Standard?

Answer 1

a roman standard was what the troops would carry into battle it would normally be a sign with the legions name on it along with it's symbol of the legion and where it had been and at the very top it would have a golden eagle to signify Rome the most famous of this was the egale with the name SPQR on it The letters stand for senatus populusque romanus. but it was like a unit flag today

here are some pics of what they looked like
http://garyb.0catch.com/equipment/standards-new.jpg
http://www.watersofthemoon.com/sitebuilder/images/roman-standards-308x342.jpg