Looking at the thing it likely would have been some kind of scout or spy plane. It would have been small enough to not be noticed easily and hard to hit with A

Looking at the thing it likely would have been some kind of scout or spy plane. It would have been small enough to not be noticed easily and hard to hit with AA fire. Fast enough to get in and get out before anyone knew it was there, and could outrun anything chasing it. Agile enough to out maneuver whatever attacks it would have come under while fleeing it's chaser. If you could have had these guys 20 miles behind enemy lines reporting troop movements, incoming bomber runs, etc. It would have been very handy at the time... considering they were still using messenger pigeons...