Are you up on blackout headlights?
The blackout headlights on the WW2 jeep are two very small lights that emitted only horizontal light rays. The theory being that it presented less of a target.>
Blackout headlight used on the WW2 jeep.
There are two blackout headlights used in the jeep.These headlights are illuminated only when the blackout (main) light switch is in the blackout position. Mazda 1245 (6 volt) lamps are used.
Source : https://42fordgpw.wordpress.com/2017/08/10/blackout-headlights/