A left-leaning veterans group is launching a series of ads targeting a baker’s dozen House and Senate Republicans on President Bush’s Iraq War policy.

The ads, paid for by VoteVets.org, will begin running Wednesday in the home states and districts of GOP Sens. Susan Collins (Maine), John Sununu (N.H.), John Warner (Va.) and Norm Coleman (Minn.) and GOP Reps. Mary Bono (Calif.), Phil English (Pa.), Randy Kuhl (N.Y.), Jim Walsh (N.Y.), Jo Ann Emerson (Mo.), Timothy Johnson (Ill.), Mike Rogers (Mich.), Fred Upton (Mich.) and Mike Castle (Del.).

The ad campaign will be unveiled today in a media conference call with retired Maj. Gens. John Batiste and Paul Eaton, who commanded troops in Iraq and are featured in the new ad. Batiste and Eaton were first publicly critical of the administration’s handling of the Iraq War last spring, when they called for then-Secretary of Defense Donald Rumsfeld’s resignation. Both men endorsed a Democratic takeover of Congress in November’s midterm elections.

Another ad will feature retired Gen. Wesley Clark, who unsuccessfully sought the Democratic presidential nod in 2004.

Also on Wednesday, in conjunction with the ad campaign, veterans of the Iraq and Afghanistan conflicts will take part in a fly-around tour with stops in New Hampshire, Maine, New York, Pennsylvania, Michigan and Minnesota.