Was sending Force Z without air cover the central blunder, and what deeper decision produced it?
Short answerYes, but the deeper problem was insufficient carrier construction, which weakened fleet air cover, ASW, and deterrence across several theaters.
NotesSending Prince of Wales and Repulse without air cover was not an isolated tactical error; it reflected the earlier decision to pause carrier construction. Even a Germany-only war required carrier support for anti-submarine work. Simultaneous demands in the Mediterranean and the need to deter Japan made the shortage still more damaging. Because carriers multiply the effectiveness of surface capital ships, the construction pause left Force Z exposed while weakening several other theater requirements.