I believe T.H's White's book is not a condemnation of war for whatever reasons, but rather more of several specific reasons. Generally, war is something usually looked negatively upon, however the point is White doesn't express his disapproving views on it just because it was bad, but rather expresses his own personal views since he lived throughout a war (WWII). To understand his view you would have to know the history of WWII. There were many things going on during period, countries as the United States and Great Britain were forced to take extraordinary actions such as monitoring civilian life/communications and civil rights were suspended since the government suspected disloyalty. On the other hand, countries such as Russia, Nazi Germany,
