Mars — Roman God of War, Courage and Civic Defence

Mars at a Glance

Tradition

Roman and Latin

Divine standing

Greater Deity

Campaign alignment

Lawful Neutral

Portfolio

War, martial courage, soldiers, military discipline, civic defence, boundaries and the seasonal rhythm of campaigning

Sacred places

Campus Martius, military mustering grounds, armouries, boundary fields and shrines carried with armies

Primary emblems

Spear, shield, wolf and woodpecker

Favoured weapon

Spear

Traditional ties

Romulus, Remus, Rhea Silvia, Venus, Bellona, Jupiter and Quirinus

Hellenic relationship

Closely identified with Ares, while remaining a distinct Roman civic and ancestral power.

Campaign present

Watching whether rulers, mercenary captains and cities treat war as a disciplined public burden or as private appetite.

Roman Pantheon · War · Courage · Soldiers · Boundaries · Civic Defence

Mars is one of the central gods of Roman religion: father of Romulus in Roman tradition, patron of martial force and a divine power bound to the protection and expansion of the Roman community. He shares battle with the Greek Ares, but Roman worship gives Mars a far more honoured civic position than a simple Latin renaming can explain.

Same Deity, Different Cultural Aspect

Mars is the Roman aspect of Ares: one war-god whose Roman cult gives much greater weight to civic defence, soldiery, boundaries and public obligation. The Ares page presents the Hellenic aspect. Both pages remain separate and self-canonical because they describe different cults and cultural presentations, not different cosmic beings.

Mars in Roman Tradition

Roman tradition makes Mars the father of Romulus and Remus and therefore places him inside the sacred ancestry of Rome itself. The month of March bears his name, and Roman ritual clustered important martial observances around the opening and closing of the campaigning season.

The Campus Martius took its identity from Mars, and his priests included the Flamen Martialis. The sacred spears associated with the god expressed an important difference between Mars and a purely destructive war power: Roman war was supposed to be ritually opened, publicly undertaken and eventually brought back under civic control.

Some ancient and later interpretations connect Mars with agriculture, fields and fertility as well as war. The precise nature and age of that agricultural role is disputed, so this page does not treat “Mars began as a farm god” as settled fact. In the campaign, his authority over boundaries, fields and seasonal mustering reflects the way Roman martial religion grew out of communities whose land and fighting men could not be separated cleanly.

Divine Mechanics

Mars is the god himself. His statistics deliberately exceed ordinary mortal and monster assumptions; CR 30 and ability score 30 are not ceilings.

D&D 5.5e
Pathfinder 1e
D&D 3.5e

Mars

Medium Celestial (Deity), Lawful Neutral

Epic CR 42 (campaign-scale; PB +12)

AC 32 · HP 1,470 (60d12 + 1,080) · Speed 60 ft.

STR	DEX	CON	INT	WIS	CHA
48 (+19)	34 (+12)	46 (+18)	36 (+13)	40 (+15)	40 (+15)

Saving Throws Str +30, Dex +23, Con +29, Wis +26, Cha +26

Skills Athletics +29, History +23, Insight +25, Intimidation +25, Perception +25

Damage Resistances acid, cold, fire, lightning, psychic, radiant

Damage Immunities bludgeoning, piercing and slashing from nonartifact nondivine attacks

Condition Immunities Charmed, Frightened, Poisoned, Stunned

Senses Truesight 180 ft., Passive Perception 35

Languages all; telepathy 1 mile

Traits

Legendary Resistance (6/Day). If Mars fails a saving throw, he can choose to succeed instead.

Magic Resistance. Mars has Advantage on saving throws against spells and magical effects.

Father of the War-Band. Allies of Mars within 60 feet cannot be Frightened, gain +2 AC while adjacent to another ally and deal an extra 9 (2d8) damage with weapon attacks.

Disciplined Violence. Mars cannot be surprised. Once per turn when a creature he can see breaks formation, abandons an ally or attacks a helpless target, Mars may move up to half his speed toward it without provoking Opportunity Attacks.

Divine Weapon Mastery. Mars’s weapon attacks ignore Resistance to their damage types. Immunity from nonartifact sources becomes Resistance instead.

Divine Spellcasting

Mars has access to every spell granted by the deity’s portfolio domains in the edition being used: War · Strength · Protection · Law. Those spells are always prepared or available to the deity.

Actions

Multiattack. Mars makes four Spear of Gradivus attacks.

Spear of Gradivus. Melee or Ranged Weapon Attack: +30 to hit, reach 15 ft. or range 180 ft. Hit: 50 (5d12 + 18) Piercing plus 27 (6d8) Force damage.

March of Mars (Recharge 5–6). Mars advances in a 120-foot-long, 20-foot-wide line. Enemies in the line make a DC 34 Strength saving throw, taking 110 (20d10) Force damage and falling Prone on a failure, or half damage on success. Allies in the line may move up to half their speed as a Reaction.

Open the Campaign (1/Day). For 1 minute, Mars radiates a 120-foot command aura. Allies of his choice gain Advantage on attack rolls, cannot be Frightened and regain 20 Hit Points at the start of each of their turns. A creature reduced to 0 Hit Points in the aura does not die from failed death saves until the effect ends.

Bonus Actions

Call the Line. Up to four allies within 90 feet may each move up to 20 feet without provoking Opportunity Attacks.

Reactions

Hold the Boundary. When a hostile creature enters a space within 20 feet of Mars, he makes one Spear of Gradivus attack against it. On a hit, its Speed becomes 0 for the rest of the turn.

Legendary Actions

Spear. Mars makes one Spear of Gradivus attack.
Advance. Mars moves up to half his speed.
Counter-March (Costs 2). Up to three allies within 60 feet move up to half their speed and may make one weapon attack as a Reaction.
War-God’s Challenge (Costs 3). One creature within 120 feet must succeed on a DC 34 Wisdom saving throw or become unable to willingly attack anyone except Mars until the end of its next turn.

Sacred-Site Actions

At initiative count 20 on a consecrated mustering ground, battlefield shrine, boundary field or temple of Mars, he can take one sacred-site action:

The Spears Tremble. Weapons carried by hostile creatures within 120 feet shake violently; each creature must succeed on a DC 34 Strength save or drop one held weapon.
Wolf’s Road. Mars and allies of his choice may move through enemy spaces as difficult terrain until initiative count 20 next round.
Close the Campaign. Mars ends one magical rage, frenzy or fear effect affecting creatures of his choice within 120 feet.

Mars — Pathfinder 1e

CR 42; LN Medium outsider (divine, extraplanar)

Init +16; Senses true seeing, darkvision 180 ft.; Perception +58

AC 66, touch 36, flat-footed 56; hp 1,120

Fort +46, Ref +39, Will +43; DR 30/epic; SR 55

Speed 60 ft.

Melee +8 divine spear +67/+62/+57/+52 (4d8+32/19–20 plus 6d6 force)

Space 5 ft.; Reach 15 ft.

Special Abilities

Father of the War-Band (Su). Allies within 60 feet are immune to fear and gain a +4 morale bonus to AC and weapon damage while adjacent to an ally.

March of Mars (Su). Every 1d4 rounds Mars moves through a 120-foot line without provoking attacks of opportunity. Enemies in the line take 24d10 force damage, Reflex DC 44 half, and are knocked prone on a failed save.

Hold the Boundary (Ex). Mars threatens a 20-foot radius with his spear and may make any number of attacks of opportunity each round, though no more than one against the same creature for the same triggering movement.

Spell-Like Abilities

CL 42nd. Constant—freedom of movement, true seeing. At will—greater dispel magic, greater heroism, magic weapon, sending. 3/day—blade barrier, earthquake, mass heal. 1/day—miracle.

Statistics Str 46, Dex 30, Con 42, Int 32, Wis 36, Cha 36

Mars — D&D 3.5e

Greater Deity; Divine Rank 15; LN Medium Outsider (Extraplanar)

CR 42 · Hit Dice 55d8+880 (1,127 hp) · Speed 60 ft. · AC 68

Attack +8 divine spear +72 melee (4d8+38/19–20 plus 6d6 force)

Full Attack +8 divine spear +72/+67/+62/+57 melee

Special Attacks alter reality, march of Mars, divine aura, salient divine abilities, spell-like abilities

Special Qualities DR 30/epic, divine immunities, fast healing 30, SR 57, true seeing, father of the war-band

Saves Fort +50, Ref +43, Will +47

Abilities Str 46, Dex 30, Con 42, Int 32, Wis 36, Cha 36

Salient Divine Abilities Alter Reality, Battlesense, Divine Blast, Divine Fighter, Divine Weapon Mastery, Irresistible Blows, Supreme Initiative.

Spell-Like Abilities At will—greater dispel magic, greater heroism, magic weapon, sending; 3/day—blade barrier, earthquake, mass heal; 1/day—miracle. Caster level 42nd.

What Is Mars Doing Right Now?

Italy is crowded with fortified cities, mercenary companies, dynastic claims and commanders who make war for contract, inheritance or survival. Mars is intensely present wherever a community has to decide whether armed force still serves a public purpose or has become an appetite that feeds on the people it claims to defend.

He is not automatically the patron of the largest army. A disciplined city militia defending its walls may have more of Mars’s favour than a celebrated captain who abandons allies for a richer contract. Likewise, a ruler invoking Rome while refusing the obligations of command may find the god’s omens turning against him.

Mars also watches the end of wars. Roman ritual did not treat campaigning as a permanent state of life. Soldiers who cannot come home, mercenaries who know no civic loyalty and rulers who keep their people mobilised because peace would weaken them all create pressure inside his cult.

Regional Effects

Ordered Muster. Within 6 miles of a major shrine of Mars, trained troops can assemble and equip themselves in half the normal time.
Weapons Remember Service. A priest handling a weapon can determine whether its most recent use was battle, execution, murder or ritual.
Boundary Instinct. Defenders gain an uncanny sense of where an enemy is most likely to breach a wall, field boundary or battle line.
War Ends Here. Once a formally declared truce is accepted at a shrine of Mars, deliberate violence inside the sacred boundary produces an immediate omen visible to both sides.

Worship in the Campaign Present

Mars is honoured wherever a community expects its citizens to defend land, kin or civic order. His surviving cults gather around garrisons, militias, military households, frontier settlements and old Roman-descended cities. Farmers also remember the older Mars whose protection extends to fields and the boundaries a fighting population depends upon.

Offerings favour iron, red cloth, spearheads, first fruits and vows made before a campaign begins. His priests bless musters, witness declarations of defensive war and demand that commanders distinguish courage from slaughter for its own sake.

Domains, Spells and Divine Gifts

Mars’s clerics favour War, Order, Protection, Strength and Courage themes. Suitable spells include Heroism, Magic Weapon, Spiritual Weapon, Crusader’s Mantle, Freedom of Movement, Blade Barrier, Earthquake and Power Word Fortify, using edition-equivalent options where necessary.

Gift: Hold the Line

Once per long rest, the devotee and allies within 10 feet cannot be pushed or knocked Prone until the start of the devotee’s next turn.

Gift: Soldier’s Return

A devotee who has fought in a formally declared war always knows the shortest safe route back toward the community from which they departed, provided such a route exists.

Relics

The Spear of Gradivus

A divine spear carried when war must move from deliberation into action. It cannot be drawn merely to intimidate civilians; if used that way, it becomes impossibly heavy until returned to a consecrated armoury.

The Wolf-Shield

A red-bronze shield bearing a running wolf. Allies who can see it cannot be frightened while defending a named boundary, gate, standard or person entrusted to their protection.

Use Mars Tonight

The Spears Move by Themselves

Every ceremonial spear in a Roman shrine turns toward the same city gate during the night.

The Captain Cannot Cross Home

A victorious commander returns from campaign but physically cannot step across his own threshold. Mars considers the war unfinished.

The Wolf in the Muster

A huge wolf walks through an army assembling for an unjust campaign. It ignores every soldier and lies down in front of the paymaster’s chest.

The Truce Bleeds

A treaty sworn before Mars remains unbroken in wording, yet blood begins seeping from the altar. Someone has found a legal way to continue the war.

Historical Sources

Ovid, Fasti III — March, Mars, Roman ancestry and the ritual year.
Platner & Ashby, Topographical Dictionary of Ancient Rome: Campus Martius — the field consecrated to Mars and its Roman topography.
British Museum — Ares and Mars — material and interpretive context for Mars as a particularly important Roman protector, distinct in status from the Greek Ares.

Rules licensing. D&D 5.5e terminology derived from the System Reference Document 5.2.1 is used under CC BY 4.0 where applicable. Pathfinder 1e and D&D 3.5e deity statistics on this page are original campaign conversions rather than official published deity stat blocks.

Rules Compatibility

The divine combat statistics, gifts, relics, regional effects and campaign events on this page are original game material. Roman literary and cult evidence is kept separate from rules invention and from Greek traditions concerning Ares.

Deep Dive

Continue through the Roman Pantheon, Ares, Janus, Cardea 4, Juturna. Follow the cult into Rome and wider Italy, or use the Cleric and Cleric Domains pages for player-facing worship.