Final answer:
Illumination shells are not typically used for nighttime reconnaissance photography. Their main purpose is to provide illumination in dark environments.
Step-by-step explanation:
An illumination shell is a base ejection projectile that contains a flare attached to a parachute. It is used for various purposes, but one of its NOT uses is for nighttime reconnaissance photography. During World War II, these shells were used to illuminate enemy territory and capture clear photographs from the air.
However, this is not a primary use of illumination shells. Their main purpose is to provide illumination in dark environments, such as battlefield illumination or search and rescue operations. The flare, when ignited, emits a bright light, which is then supported by a parachute to slow its descent, allowing a longer and more controlled period of illumination.
Therefore, nighttime reconnaissance photography is NOT a typical use of illumination shells.