Smoke screen
（重定向自Screening smoke）
![A U.S. Army Humvee laying a smoke screen](/Images/godic/202502/09/Smoke_screen1508.jpg")
![A tire, with its interior filled with petrol and set on fire. The resulting smoke creates a smoke screen.](/Images/godic/202502/09/2010_0515_rama_4_and_sathorn_22a1508.JPG")
![Smoke grenade](/Images/godic/202502/09/G-Fig1-131508.JPG")
![A purple smoke grenade being used during a military training exercise](/Images/godic/202502/09/Purple_smoke_grenade1508.jpg")
A smoke screen is smoke released to mask the movement or location of military units such as infantry, tanks, aircraft or ships.
Smoke screens are commonly deployed either by a canister (such as a grenade) or generated by a vehicle (such as a tank or a warship).