http://en.wikipedia.org/wiki/United_States_Army_officer_rank_insignia

Second Lieutenant    少尉

First Lieutenant    中尉

Captain    上尉

Major    少校

Lieutenant Colonel    中校

Colonel    上校

Brigadier General    准将

Major General    少将

Lieutenant General    中将

General  上将

General of the Army  五星上将

General of the Armies 陆军特级上将