From Cruzz's The More You Know:
https://www.coh2.org/topic/36347/cruzz-s-the-more-you-know
Some Ostheer bulletins affect multiple different units:
Note: This is an Ostheer only thing. Other factions have their bulletins targeted properly.
Note2: this is generally a one way effect. Assgrenadiers are grenadiers, but grenadiers are not assgrens. Specialist unit bulletins will generally not work with the base unit, its only base unit bulletins working on the specialist version.
Grenadiers & Assault Grenadiers & Assault Officer (entity type: grenadiers)
&& Ostruppen (entity type: conscripts)
Infantry Recruit Training (Grenadier & conscript accuracy)
Infantry Officer training (Grenadier & conscript reload)
Infantry veteran training (Grenadier & conscript cooldown+reload)
Ostruppen aren't grenadiers, but they are typed as conscripts so they get the soviet side of the bulletin applied to them. Relic pls.
Grenadiers & Assault Grenadiers & Assault Officer (entity type: grenadiers)
Grenadier cooldown
Tiger Ace and Tiger: (entity type: tiger)
Tiger penetration
Tiger armor
Tiger sight & turret rotation
PZIV command tank and PZIV: (entity type: panzer)
PZIV armor
PZIV Rotation speed
PZIV Reload speed
PZIV penetration
Stug G and Stug E and Elefant (entity type: stug)
The 3 recruit/veteran/officer training bulletins for su-76 and stug
Stug G Mobility
Stug E rate of fire
Stug G penetration
Panzer Grenadiers & Stormtroopers (entity type: panzer_grenadier)
Panzer Grenadier Accuracy
Panzer Grenadier Received Accuracy
Well ok, USF has something similar though very minor
The 4 riflemen in a lieutenant squad , and 2 guys in a Captain squad are infact AEF_riflemen so they will get benefit from riflemen bulletins
2 guys in captain and major squads are REs for that sweet +1% accuracy bulletin too.
And soviet guard bulletins will work on the lend lease guards as well.