Brent -Norm knows about Morning Reports. See message #11394 where he has posted a good account.
You need to go to NARA to see what they require and what they now ask for. There are two sections. One is the Natioanl Archives in Washington DC where accounts of unit actions are held. The other in National Personnel Records Center at St Louis, MO. They hold actual records of soldiers and in another area of civilians. When I started with National Archives I asked for info on what they had about the unit my husband was in at battalion level. They sent me info about that. Then I chose what I wanted to ask for. They have S-3 Journals which are the radio messages between the units when in battle when the units need to know where things are. I have some that were very helpful and some that were not. Just depends on how each unit responded and what codes they used. I also have Combat Interviews. These were done by men trained by the Army to learn how things went with designated units during certain battles. Some are helpful some not. And I have all of the battalion General Orders which list rosters, Purple Hearts and firing scores, Good Conduct awards, and general instructions.All of National Archive docs are charged for by the page. See their site.
I have stuff from Corps level that was useful down through battalion level. I think you have to just go for it by asking a general question such as "What do you have about".
They have Navy also and should have Navy in both locations since the fire is suposed to have not reached Navy records. Mary.