Can't proceed tutorial since i can't perform the action

[Scodazzi]

Hello! At a certain point of the tutorial we have to perform the following action:
1. Select 5 of the 6 Soldati in Capo di Orlando.
2. Select Barcellona (northeast) as our destination.
We should bring the car. It will increase our attack power!
3. Click on "Attack with" at the top!

But we have just 4 soldiers on Capo d'Orlando so it's not possible to proceed.
Anyone else having this issue?