This page is part of a publication called Number One ESL Discussion Book & Reference Guide.
Note: These are approximate numbers. Actual numbers and organization may differ from country to country.
| Unit | Number of soldiers | Commander or leader |
| team | 2-4 | sergeant |
| squad | 6-10 | staff sergeant |
| platoon | 16-50 | lieutenant |
| company | 60-250 | captain |
| battalion | 300-1,000 | lieutenant colonel |
| brigade | 1,500-3,500 | colonel |
| division | 10,000-16,000 | major general |
| corps | 20,000-40,000 | lieutenant general |
| field army | 80,000-300,000 | general or lieutenant general |
| army group | 400,000-1,000,000 | field marshal or general |