Mulan (1998)

Genre: Animation | Adventure | Drama | Family
Tagline: The flower that blooms in adversity is the most rare and beautiful of all.
Plot: To save her father from death in the army, a Chinese maiden secretly goes in his place and becomes one of China's greatest heroes in the process.

Description:
Based on a Chinese folk-tale, Mulan is a young high-spirited girl who tries hard to please her parents but always feels like she is disappointing them. Her father is drafted into the army which amounts to certain death because of his old age. Mulan disguises herself as a man and takes her father's place in battle, guided by a guardian dragon, Mushu. At the height of her success her secret is revealed...

http://www.imdb.com/title/tt0120762/
http://en.wikipedia.org/wiki/Mulan