Infinity Faction Guide

JSA

The Japanese dissident movement

Lead the Japanese Secessionist Army, where fierce independence meets stealth, discipline, and decisive close-range assaults.

JSA

The Japanese dissident movement

The Japanese Secessionist Army emerged from Japan’s struggle to break free of Yu Jing’s authority and determine its own future. Its soldiers carry the legacy of resistance into the conflicts of the Human Sphere, fighting with a powerful sense of identity, duty, and national purpose.

JSA brings together disciplined soldiers, skilled infiltrators, and warriors who embrace the traditions of the sword alongside advanced military technology. From covert operations to bold assaults, its forces seek to seize the initiative and strike at the moment an opponent is least prepared.

Official Faction Guide Opens in a new tab

On the Tabletop

How They Play

JSA rewards aggressive movement, careful staging, and decisive close-range engagements. Stealthy troops and mobile attackers help create openings, while dedicated combat units exploit them with speed and precision. The army is most effective when it avoids prolonged unfavorable firefights and commits to attacks that change the state of the mission.

Faction Strengths

What Makes Them Different

JSA features dangerous close-combat specialists, infiltration options, and fast-moving assault troops. Its forces can pressure opponents from unexpected angles and turn a small positional advantage into a decisive attack, making it appealing to players who enjoy bold, high-tempo tactics.

Your First Steps

Start Your Army

Begin collecting JSA with our recommended starter set. Build your first force and take your first steps into Infinity.

Essentials: JSA Army Pack

Recommended Starter

Essentials: JSA Army Pack

$78.00

A great starting point for building your JSA collection. Explore the included miniatures, learn their roles, and begin developing your first army.

What's in the Box?

  • Keisotsu with Combi Rifle
  • Keisotsu with Missile Launcher
  • Keisotsu Hacker
  • Kempeitai with Shock Marksman Rifle
  • Ryūken Hacker
  • Oniwaban with Submachine Gun
  • Daiyōkai with Red Fury
View Product Details

Choose Your Path

Other Ways to Start

JSA offers several specialized armies called Sectorials, each with its own unit selection, Fireteams, and battlefield strengths. Explore these forces and their starter products to find the army that interests you most.

Additional Starter Options

Operation Packs and Start Here sets offer another way to begin playing Infinity, providing introductory forces and additional materials to help you learn the game. These boxes may include miniatures from multiple factions, making them a great option for learning with a friend or starting a second army.

Essentials: START HERE - PanO | JSA
Essentials: START HERE - PanO | JSA Sale price$45.00
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Operation Sandtrap | 2-Player Battle Pack
Operation Sandtrap | 2-Player Battle Pack Sale price$155.00

New Commander Guide

Learn to Play

Discover how to command JSA, learn the fundamentals of Infinity, and find the resources you need for your first games.

Reference Library

Infinity Rules & Resources

Getting Started

Quick Start Rules Learn the basics of Infinity. Opens in a new tab First Contact — Essentials Continue your introductory missions. Opens in a new tab
JSA Identification Sheet View the faction's unit identification reference in full resolution ↗ Opens in a new tab

Rules & Army Building

Complete N5 Rules The full Infinity rulebook. Opens in a new tab Infinity Wiki Search skills, rules and equipment. Opens in a new tab Infinity Army Builder Create and manage your army lists. Opens in a new tab Official Rules FAQ Clarifications and updates. Opens in a new tab

Build Your Army

Expand Your Force

Your starter is just the beginning. As your JSA army grows, explore these recommended additions and discover what each brings to your collection.

Your Next Mission Starts Here

Ready to Build Your Army?

Explore the complete JSA range and discover the units, reinforcements, and support options to build your next Infinity force.

Shop All JSA

Explore the full faction collection