The acts the award is for are named
What the document says“The acts of valor described in this subsection are the actions of John W. Ripley, as a member of the Marine Corps, on April 2, 1972, during the Vietnam War, for which he was previously awarded the Navy Cross.”
The definition subsection (a) points to. It fixes the award to what John W. Ripley did on one date, April 2, 1972, as a member of the Marine Corps during the Vietnam War, and identifies those actions as the ones for which he was previously awarded the Navy Cross. It describes no part of the actions themselves.
What the document actually says“The acts of valor described in this subsection are the actions of John W. Ripley, as a member of the Marine Corps, on April 2, 1972, during the Vietnam War, for which he was previously awarded the Navy Cross.”
The brave acts are what John W. Ripley did on April 2, 1972. He was a Marine then. He already won the Navy Cross for that day.
This part names the day the medal is for. It adds no new facts. It just points to what he did.
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