Aircraft engine maker Rolls-Royce on Monday said it had won a contract worth $598 million to supply the US military with 268 V-22 aircraft engines.

"Rolls-Royce ... has signed a $598 million contract with the US Department of Defense for 268 AE 1107C engines for US Marine Corps and Air Force V-22 aircraft," the British company said in a statement.

Rolls-Royce said it would deliver 70 of the engines valued at $151 million in the first year of the contract.

"The contract includes four additional option years, with deliveries expected to total 268, including spare engines."