Columbia subject headings:
Military art and science--Congresses.
War--History--Congresses.
Harvard subject headings:
Military art and science--Congresses.
Military art and science--History--Congresses.
Psychology, Military--History--Congresses.
Soldiers--Psychology--Congresses.
War--History--Congresses.
Princeton subject headings:
Military art and science--History--Congresses.
Psychology, Military--History--Congresses.
Soldiers--Psychology--Congresses.
War--History--Congresses.