so, recently I got a situation on the table. My Strelok's K9 antipod engaged enemy trooper in bbt from camo (in his active turn) . Strelok is behind the wall and don't have LOF to the target and in Camo state. Does declaration of CC attack as a second short skill will uncamo strelok? If no - why? If Yes - why?
In the Active turn G: Sync troopers count as Declaring the same skill as each other, if the skill cannot be performed it then reverts to Idle. Camouflaged is cancelled by the Declaration of an Attack, so even if the trooper then Idles the state is still cancelled. http://wiki.infinitythegame.com/en/index.php?title=Ghost_(G)&redirect=no#Ghost:_Synchronized The Controller and the G: Synchronized trooper must declare the same Order, declaring the same Short Skills of the Order. However, it is not compulsory that they have the same target. If either trooper is not able to perform the Order (whether the Entire Order or both Short Skills of the Order), then that trooper will perform an Idle, while the other trooper will perform his complete Order normally.
There’s also the second G:Sync example: Let's see what could happen if the situation was different. The Auxilia Calvin, with his back against the exterior wall of a small building, sends his little Auxbot "Hobbes" towards one of the building's corners while he goes towards the opposite corner. So, the first Short Skill of the Order is declared (Move) activating both figures, who move in different directions. When arriving at the end of his movement, Calvin doesn't see any enemies. Meanwhile, "Hobbes" when arriving at the corner faces two Alguaciles who both declare a BS Attack ARO against the Remote. With the second Short Skill, "Hobbes" declares a BS Attack with its Heavy Flamethrower, placing the Large Teardrop Template over the two Alguaciles. Meanwhile, Calvin declares he will perform a BS Attack too. Although he has no target in LoF, it's required that he declares a BS attack to allow "Hobbes" to perform its BS Attack (see Graphic). That example has the same ‘one of these two models can’t do the skill” type of situation, but the declaration still gets made. The skill gets resolved as Idle because it’s impossible, but it’s still going to cancel Camo and trigger AROs.
http://wiki.infinitythegame.com/en/Camouflaged Please remember that both the Strelok and the Synchronized K-9 DECLARE melee attack (thye can select different targets, weapons, etc.., but need to declare the same short order). So the Strelok has to declare "melee attack", thus cancelling her marker state even if she executes an Idle. She declares CC attack, but is unable to fulfill the requirements, thus executing an Idle. Since the cancellation condition to the Camo marker state is "declare an order other than...", the Strelok loses the marker state.