All good resources. There is also the Osprey book:
https://ospreypublishing.com/landing...d-fire-support
Don
Author of
Over the Beach: U.S. Army Amphibious Operations in the Korean War, Leavenworth, KS: Combat Studies Institute Press, 2008, available at
https://www.armyupress.army.mil/Port...ooks/boose.pdf