A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Does the granted ability from Brothers in Battle (Battle: Ranged 4 Attack) inherit the Bushido Virtue (and Duty, I suppose) keyword(s): are the samurai actually granted 'Bushido Virtue/Duty/Battle: Ranged 4 Attack'?
Brothers in Battle
Bushido Virtue • Duty Battle/Open: Choose two or three of your performing Samurai: Each of them has +1F and the ability, "Battle: Ranged 4 Attack" while in an army with one or more of the others.
Does the granted ability from Brothers in Battle (Battle: Ranged 4 Attack) inherit the Bushido Virtue (and Duty, I suppose) keyword(s): are the samurai actually granted 'Bushido Virtue/Duty/Battle: Ranged 4 Attack'?
Brothers in Battle
Bushido Virtue • Duty Battle/Open: Choose two or three of your performing Samurai: Each of them has +1F and the ability, "Battle: Ranged 4 Attack" while in an army with one or more of the others.
No, the granted ability is not also a Bushido Virtue Duty ability.
Keywords move down to abilities on their card, but do no jump across cards.
While the granted ability is in the text box of Brothers in Battle, it itself is not an ability of Brothers in Battle.