Why did the U.S. military madly photograph the remains of its comrades-in-arms on the battlefield?

At the end of each war, the soldiers of both sides will clean up the battlefield, first recover the weapons that can be used on the battlefield, and then sort out the remains of their comrades. Cleaning up the battlefield after the war is an essential step, but many troops will skip it for some reasons. For example, in the Soviet-German battlefield, the Soviet Union won't clean up the battlefield because they don't care about the weapons on the battlefield.

In the late World War II, the United States did not clean up the battlefield. Although the United States generously used weapons, it will still recycle them after the war. The reason why they don't clean up the battlefield is simply that it is too dangerous.

First of all, when they fight against the Japanese, they are always in fear, because the Japanese are not afraid of death, and the scheming Japanese will do some small tricks on the battlefield, such as pretending to be dead, and then launch a surprise attack on them when the US military cleans up the battlefield.

Later, the Japanese army learned to be smart. They placed all kinds of "booby traps" directly under the bodies of American troops. When the US military went to carry the bodies of its comrades-in-arms, it suddenly exploded, causing a large number of casualties. After several losses, the U.S. military will stand at a distance and shoot at the bodies, and then sort out the bodies of its comrades. When all the explosive booby traps were blown up, they went to clean them up. This way has reduced the casualties of soldiers to a certain extent.