The work comes under a competitively awarded five-year Army contract worth $14 million.
"The training systems provide an immersive, safe environment to prepare our military's men and women for combat and the upgrades extend capability and service life of the Army's original investment in the program," said Jim Weitzel, vice president of training solutions for Lockheed Martin's Global Training and Logistics business.
"For the Marines, we're able to apply current system development and sustainment as they add this training capacity to maintain readiness in a changing battlespace."
The upgrades for the Army training simulators will provide integrated displays and replication of new vehicle capabilities. A total of 13 upgrades will be developed, Lockheed said, and fielded to 19 Army installations.
The new training systems for the Marines will be delivered to Camp Lejeune, N.C.