http://www.defenselink.mil/pubs/dod101/largest.html

Our track record

With our military units tracing their roots to pre-Revolutionary times, you might say that we are America's oldest company. And if you look at us in business terms, many would say we are not only America's largest company, but its busiest and most successful.

There is no other company in the world that can take a group of new employees, from a wide variety of backgrounds, and in less than three months make them part of a cohesive, organized and productive work team. They will be well trained, highly motivated and very fit. They will treat others with dignity and respect, and will willingly obey their leaders.

5.1 million strong

We are the nation's largest employer, with 1.4 million men and women on active duty, 672,000 civilians and another 1.28 million volunteers serving in the Guard and Reserve. We also support 1.8 million retirees and families that are receiving benefits.

Our global infrastructure

Whether on land or at sea, no other company can match our size. Our employees are located at about 600 fixed facilities and more than 40,000 properties amounting to 18 million acres of land. These include 250 major installations. We operate some 250,000 vehicles, from trucks to tanks, maintain a fleet of over 15,000 aircraft and more than 1,000 oceangoing vessels from aircraft carriers to landing craft. We also operate 550 public utility systems.

Worldwide presence

Today we have employees located in more than 130 countries; some 247,000 troops and civilians are overseas both afloat and ashore. We operate in every time zone and in every climate.

As a Comparison

Our Headquarters - The Pentagon
Facts and Figures
Construction: 16 months/$83 million
Corridors: 17-1/2 miles
Employees: 23,000
Bldg. size: 29 acres
Office space: 3.8 million square feet
Parking space: 67 acres
Circumference: 9/10th mile

Our headquarters is the nation's largest office building under one roof.
It took only 16 months to build and was completed in January 1943.