It is possible in some countries to make a directed donation. The next-of-kin of the donor can, in the US, direct the relevant organ be used for a patient they know of. This is not permitted in many countries including India where the organ would go to the patient who is first on the waiting list. However, in order to donate your heart, you have to make sure that the manner of death does not damage the heart. This means that brain death has to happen without the heart stopping.
American Civil War: The Civil War consisted of more than 50 major battles and 5000 minor battles. Over 360,000 Union soldiers and 260,000 Confederate soldiers died and many more were wounded. In addition, as many as 100,000 civilians died. Just about every family had someone in the war, and about 1 in 4 soldiers died.
The Battle of Gettysburg in 1863 was the bloodiest battle fought on American soil. In three days 5,662 soldiers were confirmed killed, 10,584 were missing, and 27,203 were wounded. As mentioned, the Civil War was the bloodiest for Americans. More Americans died in that war than in all of its other wars combined.