How many men in a us army unit?

The question is too vague. A "unit" can be defined as anything from a squad of 8 men to a Regiment or even a Division.

Very, very broadly speaking and using the British as a template;

4 men in a Brick

2 or 3 Bricks to a Section (Commanded by a Corporal)

3 Sections to a Platoon (Commanded by a Leiutenant)

3 or more Platoons in a Company (Commanded by a Major)

3 or more Companies in a Battallion (Commanded by a Leiutenant Colonel)

3 or more Battallions in a Brigade (Commanded by a Brigadier)

3 or more Brigades in a Division (Commanded by a 2-3* General)

x Divisions in a Corp (Commanded by a 3* General)

x Corps go to form an Army

Of course, the actual composition of any unit is defined by operational requirements, not to mention the number of personnel and equipment available.

First answer by Custermen. Last edit by Desertbootz. Contributor trust: 12 [recommend contributor]. Question popularity: 5 [recommend question]