Operation Downfall:
The Invasion of Japan, 1945-46

Primary Sources

Strategic Plan for Operations in the Japanese Archipelago by GHQ US Army Forces in the Pacific, 28 May 1945 (1.2 MB PDF)

The Japanese Plans for the Defense of Kyushu by HQ Sixth Army, 31 December 1945 (3.1 MB PDF)

White House Meeting (Invasion of Japan) (18 June 1945) (PDF)

CCS 691: British Participation in VLR Bombing of Japan (18 September 1944) (700 KB PDF)
CCS 691/2: British Participation in VLR Bombing of Japan (29 March 1945) (367 KB PDF)
CCS 691/3: British Participation in VLR Bombing of Japan (2 May 1945) (942 KB PDF)
CCS 691/5: British Participation in VLR Bombing of Japan (5 June 1945) (336 KB PDF)
CCS 691/6: British Participation in VLR Bombing of Japan (4 July 1945) (622 KB PDF)
CCS 691/7: British Participation in VLR Bombing of Japan (9 July 1945) (295 KB PDF)

JCS 742/12: Directive on the Establishment of U.S. Army Strategic Air Forces (USASTAF) (11 July 1945) (1.25 MB PDF)
JCS 1120: British Participation in VLR Bombing of Japan (19 October 1944) (2~ MB PDF)
JCS 1120/1: British Participation in VLR Bombing of Japan (30 May 1945) (4.15 MB PDF)
JCS 1120/2: British Participation in VLR Bombing of Japan (10 July 1945) (500~ KB PDF)
JCS 1120/3: British Participation in VLR Bombing of Japan (13 July 1945) (950~ KB PDF)
JCS 1120/4: British Participation in VLR Bombing of Japan (4 August 1945) (3~ MB PDF)
JCS 1388/4: Details of the Campaign against Japan (11 July 1945) (16.6 MB PDF)
JCS 1424: British Participation in the War Against Japan (16 July 1945) (768 KB PDF)
JCS 1455: Requirements for Land-Based and Carrier-Based Aircraft to Accomplish the Defeat of Japan (9 August 1945) (15.7 MB PDF)

JWPC 388/1 Employment of Airborne Units in Operations against Japan (13 July 1945) (1.5 MB PDF)

Secondary Sources

Allied Order of Battle

Japanese Order of Battle

Pastel: Deception in the Invasion of Japan by Dr. Thomas M. Huber, December 1988 (4.74 MB PDF)