In the early part of the Civil War, Alabama was not the scene of military operations. The state contributed about 120,000 men to the Confederate service, practically all the white male population capable of bearing arms. Most were recruited locally and served with men they knew, which built esprit and strengthened ties to home. Medical conditions were severe for all soldiers. About 15% of fatalities were from disease, more than the 10% from battle. Alabama had few well-equipped hospitals, but it had many women who volunteered to nurse the sick and wounded. Soldiers were poorly equipped, especially after 1863. Often they pillaged the dead for boots, belts, canteens, blankets, hats, shirts and pants. Uncounted thousands of slaves were impressed to work for Confederate troops; they took care of horses and equipment, cooked and did laundry, hauled supplies, and helped in field hospitals. Other slaves built defensive installations, especially those around Mobile. They graded roads, repaired railroads, drove supply wagons, and labored in iron mines, iron foundries and even in the munitions factories. The service of slaves was involuntary: their unpaid labor was impressed from their unpaid masters. About 10,000 slaves escaped and joined the Union army, along with 2,700 white men.