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D&D 5e Mass Combat System
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D&D 5e Mass Combat System

Suggested Price $2.00

Are you ready to wage "total war" in D&D?

This supplement offers a new alternate system for unit-based, tactical mass combat between armies ranging from hundreds to many thousands (even tens of thousands).

It also contains detailed rules for strategic campaign elements—including ruling and developing territories by constructing improvements for raising, training, and maintaining armies. Once they have land to rule and an army to fund, even your richest heroes will never have too much treasure!

V4 (10/28/2017): Morale description clarified (removed outdated references to undead); removed morale check penalty for mercenary units (Patrick Wyman's "Tides of History" autumn 2017 convinced me that late medieval professional mercenaries were not more likely to flee a joined battle)

V3 (5/12/2017): Optional initiative added, melee attacks of missile infantry fixed to better correspond to other units, spellcaster units ability uses adjusted to better correspond to the spell slots of 3rd level characters, Defend and Sharpshooter unit ability adjusted to be more usable/useful, and construction point value of Settlements readjusted

V2 (1/27/2017): Number of units stationed at keeps, castles, and palace clarified and rebalanced

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Reviews (6)
Discussions (2)
Customer avatar
Leon F June 24, 2018 12:05 am UTC
We had our first session and it was a huge success. We played on Roll20 and extended the rules, using these as a solid foundation to handle the war outside the Well of Dragons as a culmination of the Rise of Tiamat. The war is not over but I can report about the system. I will talk about what I did to build on the game.

First, I wanted a much larger scale. We played "regiment" style but instead 3x the troops and a scale of 300' squares we use 5x the troops at 500' hexes. Hexes worked great. I also wanted to have armies move, so each unit (regiment) was part of a battalion of 10 such units. Every player was directed to run an army that (in our instance) consisted of 2 battalions. So there were 5 armies/10 battalions. Battalions moved on a 5' per hex map using daily movement. Armies moved at a normal pace of 4 hexes (20 miles) per day. They could move 1 hex more if they moved fast or 1 hex less if they moved slow. That gave them a perception roll. We did the larg-scale tactical movement...See more
Customer avatar
Scott M June 24, 2018 11:49 am UTC
I am so happy to hear that you had a great session using this system in RoT, thank you for sharing! The impetus for making this system for D&D came from a similar session my own group wanted to have several years ago--we still talk about it today as one of our favorite memories. As you point out, using hexes makes the system simpler in a lot of ways and I often recommend doing so when possible.

The ideas for improvements you mention are in many ways my "dream" if I had the time and means to expand this design and write it up as a full book. As I'm sure you noticed, this system mainly revolves around "tactical" (unit maneuvers) scope, with only the broadest and most simplified "strategic" (wider and longer-duration concerns) elements. If I had the time and resources to making this a full professional product, I'd definitely want to add meatier rules on terrain, concealment, and wide-scale strategic movements plus things like supply lines, sieges and storming, naval...See more
Customer avatar
Keith F May 08, 2017 3:09 pm UTC
Hello Scott,
I just purchased this booklet and it looks like a great design from an initial scan. I am curious if there is a difference between the two included files in the download however? If there is, what are they, and if not, why are there two files?
Cheers and I will review once I have read the pages and digested it.

Customer avatar
Scott M May 08, 2017 10:03 pm UTC
Two files? Oh that must be 'version 1' and 'version 2' in which I made some corrections. I didn't realize both would be listed. I just presumed version 2 would replace version 1 when I uploaded it. Perhaps I selected something wrong. I recommend using version 2 (as it fixes lots of typos and a few imbalances)...actually I should have version 3 with a few more corrections up very soon.
Customer avatar
Keith F May 08, 2017 11:52 pm UTC
That makes sense and luckily I printed v2. :)
This is a great system Scott! I am very impressed by it. Good work!
Customer avatar
Keith F May 09, 2017 11:35 pm UTC
How can I contact you?
Customer avatar
Scott M May 10, 2017 12:37 am UTC
Glad you enjoy the booklet, Keith! You're right, the old Birthright game was a big inspiration (including the Companion Set Battle System). I don't know how many more 'products' I can make along this line since I'm just a solo hobbyist. I think more deluxe returns to Birthright would require a studio of writers. But I do promise to clean up the document again and upload version 3 soon (the only issue of substance is that the missile infantry need some slight rebalances).

You're welcome to keep messaging me, as I get notified of your replies. Doesn't look like DMG supports direct mail.
Customer avatar
Keith F May 10, 2017 2:36 am UTC
Shoot me an email at my hobby addie when you have a moment Scott. morgramen at g mail (you know the rest). :)

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File Last Updated:
October 28, 2017
This title was added to our catalog on October 06, 2016.