The final option, that "Most children were unable to attend school or receive an education."
Http://www.amazon.com/Empire-Cotton-A-Global-History/dp/0375414142
The Hellenistic Erasistratus discovered the heart was the pump to push blood through the arteries.
Aristarchus developed the theory that the sun was the center of the universe.
Euclid wrote the basic geometry book, Elements, that was used for 2000 years.
Hero of Alexandria devised the first steam engine although he considered it merely a toy.
Bad, like bad bad. the soldiers were not all soldiers, most of them were tradesmen: blacksmiths, carpenters, farmer, etc. These “soldiers” were not prepared for what happened. The soldiers went through their rations quickly and ate a mixture of flour and water to survive. The sanitary conditions of the camp were terrible because they were nit knowledgeable to put the latrine, the hole they peed, pooped, and threw-up in, far enough away from the camp so that no one got sick. Also it was winter in Pennsylvania, so it was freezing and snowing. The quarters of soldiers were cloths draped over sticks until the cabins were built later. And all of the previous was the conditions of those who were not injured or dying. Those who were injured were having body parts sawed off with woodworking saws without and pain relieving medication, except alcohol. They felt all of it. In conclusion, the soldier were cold, tired, starved, weak, and in some cases crippled. Those who had died early were considered lucky.