Original sentence: The 1957 Defence White Paper, described as "the biggest change in military policy ever made in normal times", led to the cancellation of almost all British manned fighter aircraft then in development, and completely curtailed any likelihood of a purchase
Edited sentence: The infamous 1957 Defence White Paper, described as "the biggest change in military policy ever made in normal times", led to the cancellation of almost all British manned fighter aircraft then in development, and completely curtailed any likelihood of a purchase