The Wild Empress: Guarded by 300,000 Soldiers?!

Sinopsis

After years of working nonstop, she wakes up in another world as a powerful general with 300,000 soldiers. She wants nothing more than a quiet life—until the emperor forces her into a royal marriage. Surrounded by palace schemes and enemies, she must join hands with the man who once feared her the most. The greatest battle may be winning the trust of the one person who could destroy her.