British Intelligence Update as of May 29:
On 24 May 2023, Russia conducted a security exercise around the Crimea Bridge, which links the Russian city of Kerch to the occupied peninsula. This included the creation of a smoke screen, partially masking the bridge.
The smoke screen was laid by TDA-3 truck-mounted smoke generators, likely of the 28th Brigade of Russia’s Nuclear, Biological and Chemical Protection Troops.
Russian doctrine considers the use of smoke part of maskirovka (camouflage and deception) – upon which it places strong emphasis.
However, in practice, Russian maskirovka has generally been ineffectual in the Ukraine war, likely because of a lack of a strong central planning function and poor low-level battle discipline.