Technically, Holmes stats for four different types of movement: Combat, Exploring/Mapping, Normal and Running. The latter three are directly related to each other, while Combat seems to be its own beast (more on that later). Holmes designates three different movement categories based on armor and encumbrance: unarmored & unencumbered; fully armored or carrying a heavy load; fully armored and heavily loaded. These categories have the following rates of feet per turn while exploring/mapping: 240, 120 and 60. Normal movement doubles this rate and running triples it (though running while being fully armored and carrying a heavy load is not allowed).
This is all rather straightforward, except that the movement rates of monsters are not comparable to those of the player characters. For example, a Riding Horse has the same movement rate as an unencumbered man exploring/mapping. This is ridiculous on its face.
Cook does not deal with either encumbrance or dungeon movement, other than to indicate that in a dungeon movement is measured in feet and outdoors in yards. He is primarily concerned, however, with how many miles per day a character can travel rather than yards per turn. He therefore provides a list of moves per turn in increments of 30, beginning with 30 and ending in 240, along with a conversion to miles per day.
Looking at Cook's monster list, it quickly becomes apparent that the faster movement rates are provided in order to calculate miles per day for parties who are mounted on horseback or similar creature (several of which are provided). Indeed, it appears that Cook intends for 120' per turn to be the max movement rate for humans (as suggested by the Devil Swine which has a move of 180 in its swine form but only 120 in its human form).
Looming behind all of these inconsistencies is Holme's combat movement rates — 20' per round for an unarmored man and 10' per round for an armored man. At first glance, this doesn't seem to be related to his other movement rates at all; however, noting that someone carrying a heavy load is not going to fight/fight well Holmes is probably assuming that it must be necessary to drop the heavy load in order to fight. Therefore, there are only two categories of encumbrance.
Since Holmes' max rate of 240 makes no sense when compared to monsters in his own edition as well as in Cook's, I shall err towards Cook for movement rates; however, I like how Holmes deals with different types of movement (exploring/mapping, normal and running) and combat as conceived by Holmes is very closely related to the movement rates of 10 and 20 feet, not 30+. I therefore want to figure out a way to make Cook's normal and outdoor movement rates jive with combat movement rates of Holmes.
If we equate Cook's 30' to Holmes' fully armored with a heavy load, a fully armored man would have a move of 60' while exploring/mapping. Since 120' seems to be the max move for a human, it is the base move for an unarmored, unencumbered man while exploring/mapping. This, however, leaves a gap at 90', and suggests that there ought to be a category of partially-armored.
Taking a look at Cook's stats for men, bandits, buccaneers, and nomads are all given a move of 120'. Their descriptions have a majority wearing leather armor. Merchants are the only man-type that has a move of 90'. Their description specifies that all of them wear chain mail. Thus we see the evidence of leather/unarmored = 120', chain mail = 90', and plate = 60'.
In order to make this all jive with the combat movement of Holmes, I am going to borrow an idea from Staples over at Grognardling, who has off and on tried to come up with a way to use the metric system in D&D. He uses the elegant idea of a Base Movement Rate of 1 to 4, which is then multiplied by various factors in order to get a movement rate in a particular situation. Here is my version of BMRs for use with Holmes & Cook:
- 4 = Unarmored/Leather + Unencumbered
- 3 = Chain mail + Unencumbered OR Unarmored/Leather Armor + Heavy Load
- 2 = Plate + Unencumbered OR Chain mail + Heavy Load
- 1 = Plate + Heavy Load
- Anyone with a BMR of 1 cannot fight or run.
The BMR is multiplied by the following factors in order to arrive at movement rates for various situations:
- 5 = Combat Movement
- 30 = Exploration/Mapping
- 60 = Normal Walking
- 90 = Running
- 6 = Miles per Day
- 2 = Leagues per Day
- Combat = 15' (BMR 3 x 5)
- Exploring/Mapping = 90' (BMR 3 x 30)
- Normal Walking = 180' (BMR 3 x 60)
- Running = 270' (BMR 3 x 90)
- Miles per day = 18 (BMR 3 x 6)
- Leagues per day = 6 (BMR 3 x 2)