To prepare for Supreme War Council meeting on March 28, the British War Cabinet debates Paul Reynaud’s note suggesting attacks on Soviet oilfields at Baku and shipping in the Black Sea. They unanimously reject the idea of any attacks on USSR, to avoid conflict with the Soviets in addition to Germany. The British position is communicated to General Gamelin and the other French Chiefs of Staff at a preliminary meeting. Reports of these deliberations by the French news agency Havas, apparently from official French sources, further infuriate the British and alert Germany to possible Allied intentions.
U-22 goes missing in the North Sea probably lost to a mine (all 27 hands lost).