وَقَالَ أَبُو يُوسُفَ وَمُحَمَّدٌ رَحِمَهُمَا اللَّهُ: لَا يُغَسَّلَانِ.
Translation: Abu Yusuf and Muhammad, may Allah have mercy on them, hold that neither of the two is washed.
The dual form la yughas-salan refers to both the junub and the minor. The disagreement does not concern only the adult in major impurity.
The two companions extend the no-washing rule to both categories and do not treat janabah or minority as independently defeating the battlefield exception.