The Mighty Eighth Air Force
 plane

 20 August 1942

THURSDAY, 20 AUGUST 1942

ETO (8th AF): The principle of coordinated day and night bombing receives its
first formal definition in the "Joint British/American Directive on Day
Bomber Operations involving Fighter Cooperation." The emphasis is placed on
achieving continuity in the bombing offensive from the UK.
Mission 3: 11 of 12 B-17s bomb Amiens/Longeau marshalling yard, France at
1801 hours without loss.
Unit moves in England: 27th Fighter Squadron, 1st Fighter Group, from
Atcham to High Ercall (the squadron is operating from Reykjavik, Iceland with
P-38s); 352d Bombardment Squadron (Heavy), 301st Bombardment Group (Heavy) to
Podington from the US with B-17s (first mission is 5 Sep).