This query seems to be derailing other threads so i'm posting it here.
The question is whether or not a unit without the special rule infiltrate can do so once joined by an IC with the rule. This was my response to another poster;
sigh...
nowhere does the word 'normally' show up. "an independent character can begin the game already with a unit, either by by being deployed in unit coherency with it or, if the unit is in reserve, by informing your opponent of which unit it has joined." that's the full sentence. Infiltrators are still 'deployed' just like other units only a little later.
"Being deployed in unit coherency" does not mean one unit must be deployed then deploy your independent character. they are deployed simultaneously and in unit coherency.
"while an independent character is part of a unit, he counts as part of the unit for all rules purposes..."
Does the IC have infiltrate? yes.
Can the IC begin the game already with a unit? yes.
Does a unit gain the infiltrators rule if at least one model has this rule? yes.
Can the unit infiltrate? YES.