how do we put gentleman to spy napoleon total war

very easy just send them to enemy region , their line of sight is less but you can research the line of sight research in your academy and nearly see all of the map .

when gentlemen go in a city the public order will go down , you can make a rebellion if you insert  2 gentlemen in a city witch has no guards to protect , also inserting them won let the army to go out of the city , they stay and you can raid ,

when you leave the region its the for rebels to start , when you are present they are united against you , leave the region and if they repaired attack again , they will spend money to repair and they cant attack , but in the game Austria is economically complicated and this manner is good just in starting time or middle of the game , in the late game its nothing of bother for the enemy .

to protect your lands against enemy spies and gentlemen you must move 1 hang of unit in to the bridges so their infiltration is much more harder .

3 gentlemen are enough for research so spread out and use them for spying or steal research .