So here is my take on the B/X Ranger. I made them a bit more "outdoorsy" in nature, but still very capable in a dungeon. I also completely changed their damage bonus, making it against animals instead of giant class due to their hunter nature. Let me know what you think! I think you'll see some things that are very similar to AD&D's ranger and other things that are unique to the GD&D ranger (that's "George D&D" for the uninitiated).
Rangers are a subclass of fighter who are adept at outdoor survival, hunting and tracking. Rangers typically choose to live far from civilization, protecting the wild border areas. As rangers accumulate wealth, they may opt to build fortified outposts from which to bedevil and bullyrag evil threats. However, this is purely up to the player and is in no way proscribed. As rangers gain very high status, they are taken under the wings of a powerful druid who will teach them to cast spells.
The prime requisites for a ranger are Wisdom and Constitution. If a ranger has a score of 13 or greater in both Wisdom and Constitution, the character will gain a 5% bonus on earned experience points. If both scores are 13 or higher and either one of them is 16 or higher, the character will gain a 10% bonus on earned experience points. A character must have Strength, Intelligence, Wisdom, and Constitution of 9 or greater to be a ranger.
When outdoors, rangers surprise opponents on a 1-3 and are only surprised on a 1. Rangers have a 75% chance of tracking a target outdoors; 50% in a dungeon. The DM may wish to modify this chance based upon unusual factors (passage of time more than 24 hours, precipitation, number of foes being tracked, etc).
At 7th level, rangers undergo a mystic initiation. They are taken under the wings of a powerful druid (there is a fine B/X druid description in Barrataria Games' Companion Expansion) and schooled in the druidical arts, granting rangers the ability to cast druid spells and employ druid scrolls.
Rangers use d6 to determine their hit points, but receive two hit dice at 1st level! They use the Dwarf experience point chart. Rangers can use any weapon, but gain to-hit bonuses using “woodland weapons,” including the bow, spear and axe. Rangers can wear leather armor or chain mail without penalty, but lose their tracking, surprise, and spellcasting abilities while wearing plate mail.
Rangers also gain a damage bonus vs. all animals in combat due to their hunting mastery. This includes giant animals such as giant lizards and spiders, but does not include magical animals such as manticores or basilisks.
Note: Rangers use the Fighter Saving Throw table.
To Hit Bonus – Woodland Weapons
Damage Bonus vs. Animals
1st Level Druid Spells
2nd Level Druid Spells