Sheer And Utter Power!
You "PC" types can piss and moan about Caucasians portraying Asians in this film until the cows come home!
The point being is the massive power behind this film and the situation it depicts during the JAP occupation of China and the humble people's resolve to remove them!
There is no reference to "Nationalists" or "Communists", just the resolve of a people to remove the yoke of a filthy vile monster named Japan from their home!
Next time you snicker at the "stereotypes" portrayed in this film, remember incidents like the "Rape of Nanking" where hundreds of thousands of innocent men, women and children were butchered like cattle by a vile enemy who, to this day has refused to apologize for their atrocities against humanity!
THINK ABOUT IT!