"Some time ago I mentioned Liddell-Hart and Fuller. Other people have mentioned AJP Taylor and I even quoted Winston Churchill" - Raggytash

OK then Raggytash

Liddell Hart - 1920s/1930s - Military Theorist

Fuller - 1920s/1930s - Military Theorist

A.J.P. Taylor - 1930s to 1960s - Historian - Not a specialist on the First World War.

Winston Churchill - 1920s/1930s The six volume World Crisis basically was written by Churchill from the point of view of justifying his decisions and role in the war.

The most recent of these "historians" of yours is A.J.P.Taylor 1969 so tell me what sources other than British were available to those authors? How much of the First World War was still secret (50 year rule would mean that information would trickle through from 1964 onward so that rules three of your four out).

If the number of different sources and the transparency related to classified information is anything to go by then it logically follows that anything written AFTER 1970 must be more complete than anything written before that. Between 1970 and 1990 a flood of foreign material from both France and Germany became available adding to the historians knowledge - all of this would have been unavailable to Liddell Hart, Fuller, Churchill and A.J.P.Taylor - True?

It doesn't invalidate their work but it must modify some aspects of the earlier work due to better understanding in the light of new and additional information.