I suppose it makes a seasonal change from the Roundel Police!!

Speaking of seasons and the Roundel Police: of course we all know (don’t we) that underwing roundels were not introduced on the black&white underside scheme until the Battle of France started in the earnest, by which time (mid-May) the only whitish thing on the ground was the sand on Dunkirk beaches… Not sure what tractors were used there.

(My coat on, already.)