MS101L02 The US Army
Overview of the US Army ROTC MS101, Lesson 02
Revision Date: 31 March 2023
Key Topics Covered
Mission of the US Army
Deploy, fight, and win the nation’s wars.
Provide land dominance through Army forces.
Essential for defeating enemy ground forces and controlling land, resources, and population.
Chain of Command
Commander in Chief
Secretary of Defense
Secretary of the Army
Army Chief of Staff
Various Command Levels:
Theater Commander
Field Army Commander
Corps Commander
Division Commander
Brigade Commander
Battalion Commander
Company Commander
Platoon Leader
Squad Leader
Team Leader
Army Command Structure
Organized hierarchy from Brigade to Company level:
Brigade: 3 or more Battalions
Division: 3 or more Brigades
Corps: 2 to 5 Divisions
Field Army: 2 to 5 Corps
Key Personnel at Battalion Level
Command Sergeant Major (CSM)
Battalion Commander
Executive Officer (XO)
Operations Officer (S3)
Army Organization Breakdown
Battalion Example:
3-5 Companies (A Co, B Co, C Co, FSC)
Company Example:
3-4 Platoons
Platoon Example:
3-4 Squads
Fire Team Example:
Organization of Squad and Fire Team
Types of Units
Armored Units
1st Cavalry Division
1st Armored Division
Mechanized Units
1st Infantry Division
3rd Infantry Division
Light Infantry Units
10th Mountain Division
Airborne Units
82nd Airborne Division
101st Airborne Division
Cavalry Units
3rd Cavalry Regiment
Practical Exercise
Group activity:
Form three equal groups
Assign a leader and recorder
Duration: 10 minutes
Resources: Paper, sticky notes, chalkboards, dry-erase boards
Closing Review
Learning Objectives Recap:
Recognize the US Army Mission
Understand Chain of Command
Identify Command Structure
Basic Organizations of the Army
Types of US Army Units
Homework Assignment: Complete MS101L02 The US Army LA.docx quiz.