Note on the 26/27th hotfix:
Veterancy is broken again, that much I'm sure people understand. But you should know that we're actually worse off than from where we started, because Relic changed all the existing "apply_to_squad" veterancy that was working (received accuracy and sight bonuses, mostly) to "apply_to_entity", and this wasn't reverted, so now that they reverted the "apply_to_entity" code due to all the issues (rear echelon blobs etc), they won't work either.
Only remaining infantry veterancy is ability changes and conditional (heal outside combat, sprint outside combat etc) buffs.
GL in ESL bois, ill be watching.