I think archers are different than rangers. I personally thought rangers as some kind of intelligence force (hence the tracking ability and stealth) and archers simply a unit with bows shooting on command from a distance to lessen the numbers of an advancing force to make it easier on the infantry.
Based on that: say a ranger is sent to spy on another (Example
town due to rumors of them assembling arms, the ranger would have to get near the town, leave his horse at a distance to avoid patrols or to prevent the town from knowing he was there at all, and once (if) he sees that they are grouping up for an attack, he would sneak back to his horse and get to his own town as fast as he could to prepare for an oncoming attack.
Just like people who are warriors probably think of themselves as knights, and not normal infantry (just like modern times, there's army, then there's rangers, same thing here: Infantry= army, Rangers= knights.) its probably same thing with rangers. rangers don't just want to think of themselves as just an archer in a line of archers just like him, they would want to think of themselves as something better, like the ranger i described. nobody want to play a game where you're the average guy, you want to play as something you aren't. Example: Call of Duty... it sold 13 million copies the first week of release this year. why? because in the story you destroy everything in your path to carry out some highly secret mission as a team member of the best task force made from only the best of the best from around the world that only 5 or so people ever get to be in. And its not just CoD, its Halo, where your the last of your unit (Spartan) you destroy thousand of aliens single handed and save the human race. Battlefield 3, where you save the US and other countries from nukes. the list goes on. So there's your proof if you don't believe me. heck, look it up if you still don't.
Now, I'm just stating a personal opinion, so don't rage