(Reuters) The U.S. Marine Corps will start ordering what could be thousands of inactive service members to return to duty in the coming months to counter a steady decline in the number of such troops who volunteer, the service said on Tuesday.

Col. Guy Stratton, head of the Marine Corps' manpower mobilization plans, said the service is short some 1,200 volunteers over the next 18 months to fill roles in the war on terrorism. The total shortfall fluctuates regularly, he said.

Stratton said President George W. Bush authorized the Marine Corps to issue involuntary recall orders to members of the Individual Ready Reserve, part of the non-active force. It will be the Marine Corps' first involuntary recall since the invasion of Iraq in 2003.

The authorization limits the number of Marines who can be activated involuntarily to no more 2,500 at any one time, out of a pool of about 35,000, Stratton said. The length of each activated service member's duty is capped at 24 months but will likely last 12 to 18 months.

Under a general contract, a Marine serves four years on active duty and four in reserve. While on reserve, Marines may volunteer to return to active duty to fill needed roles.

But the number of Marines volunteering outside their active-duty service requirement has been steadily declining for two years, according to Stratton, who said could not offer an explanation.

The Marine Corps' authority to involuntarily recall Marines for jobs in the "Global War on Terror" -- a war whose parameters remain largely undefined -- has no expiration date...http://tinyurl.com/qp2ak
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