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REC // BRIEFING
// OPERATION BRIEFING · THEATER FILE

OperationDiadem

1944–1944

In 1944, Operation Diadem was a special operation fought by India, the United Kingdom, the United States, and France against Germany, resulting in significant casualties.

OUTCOME
DECISIVE VICTORY A
Era
1944–1944
SIDES
7
⚔ CONFLICT SPECIAL OPERATION

OperationDiadem

⚔ World War II · 1939–1945 is part of this war
British India Poland Canada India United Kingdom United States France Poland Canada
VS
Germany
Start: 11.05.1944 End: 23.05.1944 Duration: 12 days Participants: 7 countries
Overview
Sides
Chronology
Outcomes
01 / Overview
Operation Diadem
Date
1944–1944
Type
special operation
Duration
12 days
Participants
India United Kingdom United States France Poland Canada +1
Outcome
decisive victory a
Parent War
World War II
02 / Sides
Belligerents 7 participants
British India Poland Canada
India India Primary United Kingdom United Kingdom Primary United States United States Primary France France Primary Poland Poland Primary Canada Canada Primary
VS
Germany Germany Primary
03 / Outcomes
Outcome & Human Cost
🏆Decisive Victory — Side A
FIRST DEFENSE DEALS AFTER WAR 20 deals
Year Weapon / Product Seller Buyer Type Value
1945 Culver XPQ-15 United States United States — —
1945 Culver XPQ-15 United States United States — —
1945 Tacoma-class frigate United States Russia aid —
1945 North American P-51 Mustang United States New Zealand new-build $2 Mn
1945 Admirable-class minesweeper United States Russia gift —
1945 Focke-Wulf Ta 152 Germany Japan license-production —
1946 Stinson L-5 Sentinel United States Italy Sale —
1946 Short Sandringham United Kingdom United Kingdom new-build —
1946 V-class submarine United Kingdom Norway second-hand —
1947 M2 half-track car United States Finland second-hand —
1947 Meteor NF11 United Kingdom Argentina new-build —
1947 Gloster Meteor United Kingdom Argentina license-production —
1947 Meteor F4 United Kingdom Argentina new-build —
1947 Colony-class frigate United Kingdom Argentina second-hand —
1947 YMS-1-class minesweeper United Kingdom Poland second-hand —
1948 105 mm Howitzer M3 United States South Korea aid —
1948 Short Sandringham United Kingdom United Kingdom new-build —
1948 Loch-class frigate United Kingdom New Zealand second-hand —
1948 BYMS-class minesweeper United Kingdom Finland second-hand —
1949 Gleaves-class destroyer United States Greece gift —
📚 Sources
  1. Uppsala Conflict Data Program (UCDP)
  2. Correlates of War (CoW) project
  3. Official archives and academic literature