In Baghdad, 4 U.S. GIs Die; 16 Are Wounded

BAGHDAD — A raging, day-long battle erupted in central Baghdad yesterday and four Iraqi soldiers were killed, 16 American soldiers were wounded and an American military helicopter was hit by ground fire at the close of the second month of the massive security crackdown on the capital. Sixty miles to the north, in the mostly Sunni city of Muqdadiyah, a woman with a suicide vest strapped beneath her black robe blew herself up in the midst of 200 Iraqi police recruits. The attack killed at least 16 men waiting to learn if they had been hired.