Pearl Harbor could be read as a decisive battle, a preliminary attrition strike, or a surprise operation that bought time for a later battle. Japan does not appear to have treated the raid as a long-term solution because its industry had not been organized to exploit a lengthy American recovery pause. Its practical value lay in reducing interference with operations in the Philippines, Malaya, and the Dutch East Indies while Japan tried to establish a defensible position. The attack bought operational time without removing the industrial timetable created by the Vinson-Walsh naval expansion.
Chapter · 56:14-58:58
What Pearl Harbor was supposed to buy
The attack could fit several doctrines, but its immediate purpose was buying time for conquest and consolidation.