A unit consists of 3 models that each have two melee weapons and the Combined Melee Attack advantage. The unit charges successfully, and all troopers are placed with the charging model’s charge target in their melee range, and some number of other enemy models also in all the troopers’ melee ranges.
The player elects to make a combined melee attack with all 3 models against the charging model’s charge target. The charging model’s first attack is a charge attack, by definition (as all the relevant criteria have been met).
Normally, the first attack made by the other 2 troopers would be a charge attack if it is made against an enemy model/unit that was in the charging model’s melee range at the end of its movement. In this case, though, the other 2 models who are contributing attacks are not actually making attacks.
When they contribute these attacks to the charging model’s attack, are they all considered to necessarily be “charge attacks” for the purpose of determining whether the combined attack itself is a charge attack?
Is it possible to elect that the contributing model is not contributing a charge attack, and later make an independent attack itself woth its 2nd weapon, which would then be “the first attack […] made by” that model? This would result in the combined attack not being a charge attack, but there might be some tactical reason that you would want to make a non-charge combined melee attack against the original charge target, while making the other troopers’ charge attacks against other targets.