What are these tracers?

[hal bregg]

What are these tracers? Missiles? A bit strange...

 

[Airframes]

Target sky markers. Aimed in the direction of the target, leaving a smoke trail to aid aircraft in the formations further back.

 

[hal bregg]

Thx, Airframes, there's always something new in a supposedly well-known topic!.

 

[fubar57]

American Projectiles and Explosives - A.A. Flares and Target Identification Bombs

American Projectiles and Explosives Aircraft Pyrotechnics ...

ww2data.blogspot.com

 

[Engineman]

Looks like Lead B-24 Z has H2S, dropped about 1 sec before closest ship S, which is about a 300' longer drop.

Eng