JR15 Little Ferry - 15 April 1746

JR15 Little Ferry - 15 April 1746
Historical Background
A few...

JR15 Little Ferry - 15 April 1746

it is possible for the Jacobites to lose this scenario on the first turn

As Mackenzie located in a building, I suppose that the 1st sword rolled against him in melee combat (or ranged combat) could be ignored.
Am I right ?

No, as per the FAQ, the "symbol"  means a Unit symbol

Terrain – Buildings (Page 20)
Q: Do we ignore a "symbol hit" (including sabers) on melee into a building hex, or just a "unit symbol hit?
A: GOOD CATCH - THIS SHOULD HAVE BEEN CLEARER. THE RULES LEFT OUT A KEY WORD “UNIT” SYMBOL FOR A NUMBER OF TERRAIN FEATURES.
A UNIT ON A BUILDING HEX IGNORES 1 UNIT SYMBOL HIT FROM RANGED AND MELEE COMBAT.
A UNIT ON A FOREST HEX IGNORES 1 UNIT SYMBOL HIT FROM RANGED COMBAT.
A UNIT ON A FIELD WORKS HEX IGNORES 1 UNIT SYMBOL HIT FROM RANGED COMBAT EXCEPT FROM ARTILLERY RANGED COMBAT.
A UNIT ON DIRECTLY BEHIND A STONE FENCE IGNORES 1 UNIT SYMBOL HIT FROM RANGED COMBAT EXCEPT FROM ARTILLERY RANGED COMBAT. (RB)

www.commandsandcolors.net/tricorne/the-g...ata-28-nov-2018.html

I understand this when the target is a unit but are you sure it's the same when it is a lone leader on a building hex ?
It's not really written in the rules when it's a leader.
As said upper, this scenario in this way risks to be quicker to play than to install...