Book excerpt: The purpose of this multisite investigation is to attempt to quantify risk or establish baseline rates for the offspring of female soldiers by career management field or military occupational specialty for the following outcomes: spontaneous abortions, ectopic pregnancies, intrauterine fetal demise, preterm birth (PB), low birth weight (LBW), preterm and low birth weight infant, and congenital abnormalities. Currently, 3779 subjects have been enrolled, which consist of 1026 soldiers, 164 daughters of soldiers or military retirees, 2572 spouses of active duty soldiers or retirees, and 20 women classified as other.