Many of these sources of inspiration feature large armies that set out for conquest or glory during campaigning season.

The War of the Roses, The Lord of the Rings, andDragon Ageall feature invasions prominently.

Bring some fresh blood into your D&D campaign.

Four faction members walking through the streets of Sigil from Dungeons & Dragons

Faction Agents by Taras Susak

Invasion can make for an excellent late-game challenge.

It ups the stakes and forces your players to make important, time-sensitive decisions.

Invasions make natural bookends for campaigns or seasons.

A group of adventurers chart together a detailed plan around a meeting table

Scary Modron March by Andrea Piparo

At first glance, invasions seem to promote this bang out of gameplay scenario.

But with someskillful storytelling and foreshadowing,invasions can help set your adventure’s pace.

Invasion sessions don’t need to feature endless battles.

Mechanical Modrons march through strange and unfamiliar territory.

Scary Modron March by Andrea Piparo

These events can form some of the most memorable parts of a campaign.

Considernight raids against the invaders' campto weaken them.

Rooting out spies and double agents inside a besieged fortress could even make a fun side quest.

A tabaxi crouches with crossbow ready in Dungeons & Dragons art.

Dungeons & Dragons Dizzy Bird the Tabaxi Scout by Bia Gordos.

Real sieges and invasions involved starvation, dysentery, and disease.

Battles were often long and desperate.

If it does come to a siege,use waves of enemiesrather than a single massive force.

Adventurers brawl in a tarvern in Dungeons and Dragons.

The Brawl at Yawning Portal Tavern by Scott Murphy

Films use this technique for dramatic reasons.

Borrow this aspect liberally.

In this scenario, the DM canroll to determine events on a larger scalewhile considering the players' actions.

Dungeons & Dragons Gnoll pack raiding a village

But there are many resources for DMs and players who like to zoom out for larger battles.

Recruit allies by impressing factions.

It’s a great setup for showing the players all the key NPCs, their needs, and motivations.

Dungeons & Dragons image showing two Flaming Fist members placing recruitment posters.

Recruitment Drive by Diego Gisbert

Consider having the players choose who to recruit byincluding some time restrictions.Their choices will feel more meaningful if limited.

Historically, the campaigning season coincided with the warmest months when crops were plentiful.

Cold, poorly-fed troops should suffer some penalty to their movement and combat.

Dungeons & Dragons collage showing a rogue Dragonborn, Io the dragon god, and a warrior Dragonborn

Have The Party Hold The Line

Heroic last stands atnarrow choke pointsdefine many invasions.

(Look at the film 300 for arguably the most iconic example.)

Perhaps the party musthold a gate for several turns before reinforcements arrive.

Dungeons & Dragons - Adventurers trying to enter a city get stopped by a guard at the gates

Entering Saltmarsh by Zoltan Boros

Implement Siege Weapons

The Dungeon Masters Guide includes a list of siege weapons on page 255.

Siege weapons are heavy and difficult to transport, too.

Generals don’t deploy these valuable tools until they’ve cleared their lines.

A rogue steals treasure while her accomplices attack guards in DND.

Concept Art from Keys from the Golden Vault by Evyn Fong

Sabotaging siege weapons is the kind of adventure D&D’s scale is perfect for.

Use a variety of techniques and tricks to keep your players guessing.

There’s not a lot of tension if they know exactly when and where the sword will fall.

Three scenes of adventuring parties in Dungeons and Dragons

Gear up for the ultimate D&D adventure.

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