Navistar International announced it is reorganizing its truck segment into four business units: North American Truck Operations, Global Truck Operations, Global Bus Operations and Navistar Defense.

The reorganization enhances the company's competitiveness around the world and strengthens its core businesses in North America, said Dan Ustian, Navistar chairman, president and chief executive officer.

"We are organizing our truck segment to better capitalize on the momentum and opportunities ahead for Navistar in our core markets and around the world," said Ustian. "Just a few years ago we set the goal to double our revenue to become a $15 billion company by 2009, and we are on the brink of achieving that mark despite one of the worst North American truck markets in recent history and the overall hardship of the U.S. economy. We must look at ways to continue our forward momentum around customers, new products and growth opportunities."

• North American Truck Operations - Customers in Navistar's core markets in North America will be served by a team with a focus on products, operations and sales for the U.S., Canada and Mexico.

• Global Truck Operations - Customers in markets outside of North America will see products developed specifically for their unique needs by a team focused on global product development, sales and operations. These efforts will include expanding Navistar's export operations and further development and implementation of Navistar's joint venture with Mahindra as well as a proposed joint venture with Caterpillar.

• Global Bus Operations - Will lead all commercial and school bus product development, operations and sales throughout the world.

• Navistar Defense - As a sustainable $2 billion annual business, Navistar Defense will continue its success converting commercial truck platforms, engines and components into specialized vehicles for the U.S. military and allied countries. Navistar has had much success with its MaxxPro Mine Resistant Ambush Protected (MRAP) vehicle and Medium Tactical Vehicles (MTV) built off the International WorkStar truck platform.

Further definition of the new organization structure and appointment of executives will take place over the next two months. The changes will involve some targeted job reductions as functions are consolidated and streamlined to align with market conditions, but numbers have not been determined.