What does the attache do?

[Dindomir]

Title.

[『FTS』 (Un)armed guy]

You gain you certain % of army exp from that contry which has attache,if you send attache to for example China,you can see all of his troops where are they going,doing.It gives you 10% war support and the contry with attache gains small boost to organization and planing speed (i think)

[Lord Castellan Majorian]

Send it to your allies, alongside volunteers. As the dude above me said it gives good bonuses.

[Dindomir]

Thanks.