Crimson Empire5 books in series
A Crown for Cold Silver Publisher's Summary
Cold Cobalt, the Banshee with a Blade, First Among Villains... When there were no more titles to win and no more worlds to conquer, the warrior queen Zosia faked her demise and gave up her legend to history. But when violence finds its way to her door years later, she must round up her adventuring companions - each surprised to see her alive - and set out for revenge.
Time has not been kind to her old comrades, and some have only their own goals in mind. Not only that but there's a young, beautiful, and skilled general out there, gathering soldiers to her banner for a war against the deadliest of enemies. The girl is using a legend she did not earn and calling herself by a name that was never hers - that of Zosia herself.