屯兵

tún bīng shù biān

屯兵戍边

station troops to guard the frontier

tún bīng biān chéng

屯兵边城

quarter troops in a frontier town

chéng zhōng tún bīng shàng wàn

城中屯兵上万。

Above ten thousand troops were stationed in the city.

nà nián chūn tiān tā zài é guó biān jìng tún bīng liù shí wàn

那年春天，他在俄国边境屯兵六十万。

In the spring of that year, he stationed 600,000 troops on the Russian border.