WASHINGTON — Senate officials on Thursday backed plans for a 2.2 percent salary raise for all military personnel in their draft of next year’s defense authorization bill, deciding not to go along with a House proposal seeking a bigger pay boost.

The conflict will be one of the major issues to resolve if the competing versions of the bill pass their separate chambers later this month, as expected.

Pentagon officials had requested the 2.2 percent increase in February, saying that rate would keep military pay on pace with civilian wages. But House officials opted for an extra 0.5 percent bump to help further close the gap between troops’ salaries and private sector wages.

The difference between the 2.7 percent raise and the lower Senate proposal would be about $6 a month for the youngest enlisted troops, and nearly $13 extra a month for an E-5 at 10 years.

Earlier this week a group of eight Democratic senators sent a letter to Senate Armed Services Committee Chairman John Warner, R-Va. asking for the 2.7 percent increase, noting that a higher paycheck could help with military recruiting and morale.

The Senate’s version of the defense authorization bill, which passed the committee with a unanimous vote, totals $517.7 billion, about $5 billion more than the House-backed draft unveiled earlier this week and $78 billion above what Pentagon officials proposed in February.

The two congressional proposals have some similarities: Both include an extra $50 billion ongoing operations in Iraq in Afghanistan, in an effort to lessen the need for semi-annual emergency spending bills Congress has faced in recent years.

The House and Senate both set aside nearly $1 billion for up-armored Humvees and other military vehicle improvements. But the House went further, also authorizing $110 million more for radio frequency jamming devices and another $100 million for manned aircraft patrols of areas where IEDs have been a recurring threat.

Both chambers backed plans to increase in the active Army end strength to 512,400 — about 10,000 more soldiers than currently on-duty and 30,000 more than the service’s projection for fiscal 2007 — and maintain the active-duty Marine force at 180,000.

The Senate included language in its draft mandating a review of the new Army interrogation manual and whether it could violate anti-torture laws passed by Congress last year. The House rejected a Democrat amendment asking for such a review.

Both full chambers must approve the proposals to send the drafts to a conference committee, where a compromise will be worked out before sending the final version to the president.

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