Welcome to Librarium Online!
Which army uses a lot of scouts. My son loves the sniper scouts. Thanks
3K Highest Elves
2K Saim-Hann Eldar
4K Pts Freaky Fast ORCS
5K Hive Fleet Devourer
2.5K Bretonnian Knights
3K Tomb Kings
None of the legendary chapters are particularly famous for using scouts. The Dark Angel and the Space Wolves have scouts that are well known but not as snipers.
My advice would be to make a trait army, that way you don't need to worry about finding an legendary chapter which fits. I'm currently making such an army, here's the list just in case you're interested... http://www.librarium-online.com/foru...ad.php?t=49970 ( 10th company (scouts army))
"You challenge me knowing that I am Xiahou Dun!?"
The Raven Guard relies heavily on Scouts, and their ability to infiltrate in front of the main army and set up attacks - they rely on them because of their survivability for extended amounts of time behind enemy lines.
They also prefer things like Drop Pod Assaults and Assault Squads.