MILITARY OBJECTIVES ONLY!
... I I F Tense, concentrated young pilots of the R.A.F. studying the science of map- reading under expert tuition. Military objectives only, is the motto of our bombers, and, in order to ensure this, it 's essential that our pilots should be very highly skilled in the art of map-reading and aerial navigation so that they know exactly uhat enemy factory, port, or concentration of war material ...