RAF and dive-bombing.

[Bill Walker]

Slightly off topic, but ...

AOP aircraft rarely operated behind enemy lines, except when flak and enemy fighter aircraft were absent. Standard AOP procedure was to fly just behind the front line to observe and correct their own gun fire, and to fly well behind the line, observing enemy shell strikes from as close to directly above as possible, in order to plot a line back to the enemy guns.

The Stinsons in Burma were on a different mission, supply and communications behind enemy lines, but again they were very careful of flaks and enemy air operations.