Combat systems of OD&D and Chainmail

Contents Introduction Practical Application Armor & Weapons Troop Type to Armor Class conversion Troop Type to Weapon Class conversion Bonuses Introduction ↩Generally, you have about five combat systems available when running OD&D1 with Chainmail:2 Troop Type System Man-to-Man Combat Jousting Fantasy Combat Alternative Combat System (ACS) 📝 NOTE: Additional combat systems appear in later supplements: Alternate Combat & Hit Dice System from Greyhawk3 (expanding ACS), Psionic Combat from Eldritch Wizardry,4 and entirely new mass-combat rules from Swords & Spells,5 but these will not be covered here. Troop Type System ↩The main combat mechanics of Chainmail's large-scale (1:20 or 1:10) combat are resolved by rolling several six-sided dice according to the "Combat Tables" (Appendix A, Chainmail, p.40), cross-referencing the attacking vs. defending troop type. E.g., three Medium Horse figures attacking a unit of Light Foot would roll six dice (2 per figure), killing an enemy figure for…

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