A file photo of a General Dynamics exhibit booth at a government conference. Defense giant General Dynamics said Monday it will combine two units within its information technology segment to create a new business unit based in Fairfax. (Jeffrey MacMillan/The Washington Post)

Defense giant General Dynamics said Monday it will combine two units within its information technology segment to create a new business unit based in Fairfax.

The company’s Arizona-based C4 Systems segment will combine with the Advanced Information Systems segment located in Fairfax to form a new unit named General Dynamics Mission Systems.

“This restructuring will make us more efficient, cost-effective and responsive to our customers,” David Heebner, executive vice president of the Information Systems and Technology group for General Dynamics, said in a statement.

Both segments employ a total of 13,100 people. A spokeswoman for General Dynamics said jobs will be largely unaffected by the consolidation, but that there would be “some reductions based on redundancies.”

In February, C4 Systems closed two facilities in Pennsylvania and Florida in response to lower demand for military products, according to a report in the Phoenix Business Journal.

Following the consolidation, the Scottsdale office of C4 Systems will remain operational, the spokeswoman said. The new unit will be led by Chris Marzilli, president of C4 Systems. The restructuring is expected to take effect in January.

Many government contractors have consolidated their businesses or branched out into commercial work in response to shrinking federal budgets. This is the second major consolidation that Falls Church based-General Dynamics has made in recent years. Last summer, the company consolidated two of its combat systems units in a similar fashion.

“The primary reason for this consolidation is to leverage the complementary portfolios and increase competitiveness,” the spokeswoman said.