How about the Ju-88 with the air-dropped V-1 Buzzbomb? Point in the general direction of your target, set the range, and drop.
Or the Ju-88's that were modified into flying bombs themselves. Had a 190F duct-taped up top to fly it to target, then bombs away (with a 3+ ton warhead

)
EDIT: Ok, it's an He-111 that air-dropped the V1, not an '88.