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Imperator: Rome - Military Reworked. How military recruitment works in the new Marius update. Levies, legions, traditions, and more have been overhauled in this massive free update. Revisit the ancient world and conquer it with your new military might!

At the start of a battle, cohorts from both armies deploy on the battlefield. Deployment may also happen during the battle when cohorts retreat or new armies join the battle (often referred as reinforcement).

Deployment for naval battles work exactly same as for land battles.

Key elements[edit | edit source]

  • Unit types: Some unit types prefer deploying on the flanks instead of the mainfront. Recruit cost and maneuver affect priority for deployment.
  • Cohort preferences: These change the default priorities which allows customizing the deployment.
  • Preferred size of flank: This sets size of the flanks which affects how many flanking cohorts get deployed.

Default priorities[edit | edit source]

Army window showing selected cohorts, preferred size of flank and cohort listing.

Each unit type belongs to one of these groups: main front, flanks or support. By default, these groups are:

Group Top priority Medium priority Low priority Criteria
Main front War Elephants Heavy Cavalry, Heavy Infantry Archers, Chariots, Light Infantry Recruit cost
Flanks Horse Archers Camel Cavalry Light Cavalry Maneuver
Support Supply Trains

The criteria is based on values before reductions. For example reducing cost of Chariots won't lower their priority.

Priority for an individual cohort further depends on its manpower/strength and location on the cohort listing of an army.

Cohort preferences[edit | edit source]

Default priorities can be customized by selecting preferred cohorts. This leads to following priorities for the main front:

  • Selected primary cohorts
  • Selected secondary cohorts
  • Main front group (ordered by cost)
  • Selected flanking cohorts
  • Flanks group (ordered by maneuver)

Flanks have following priorities:

  • Selected flanking cohorts
  • Flanks group (ordered by cost)
  • Selected primary cohorts
  • Selected secondary cohorts
  • Main front group (ordered by maneuver)

Support cohorts are deployed only when no other cohorts are available.

Preferred size of flank[edit | edit source]

The size of the frontline (combat width) is 30 slots. Flank size can be set to be 2, 5 or 10 slots which leaves 26, 20 or 10 slots for the main front.

The preferred size of flank only matters when nearly filling the combat width. With low amount of cohorts all cohorts will deploy the same way regardless of this setting because flanking cohorts will be just placed on the main front.

On medium sized battles selecting the correct flank size may reduce losses or even make you win the battle. Too low flank size deploys flanking cohorts too far away from enemy so they won't be able to attack the enemy until some cohorts retreat and make space on the frontline. Similarly too high flank size puts flanking cohorts on front of the enemy cohorts (which of course could be intended).

Reinforcement[edit | edit source]

Deploying during the battle causes cohorts to lose 5% of their max morale. This excludes cohorts selected as the secondary cohorts.

Multiple armies[edit | edit source]

Each army in the battle deploys independently using their own preferences. Even when an army joins an ongoing battle, the instantly deployed cohorts don't count as reinforcements so they don't suffer the 5% morale penalty. Instead they may suffer a 10% morale penalty (after 4 rounds when a retreat is possible).

After that the cohorts deploy as reinforcements, and may suffer the 5% morale penalty.

When multiple armies are at the same location, the order of their deployment can be seen by selecting those armies. The army on top of the list deploys first, then the next one and so on. The order is based on the time of arrival. The army that arrived first will be on top of the list. When moving multiple armies they will keep their order.

Armies can be created and/or reorganized to manipulate deployment order which allows exactly specifying how units deploy.

Examples[edit | edit source]

Proper usage of preferred size of flank[edit | edit source]

Example deployment with different size of flank

20 Light Infantry and 10 Camel Cavalry versus 10 Heavy Infantry. The preferred size of flank is 5 (default value). This causes Camel Cavalry to deploy at edges of the battlefield which prevents them from attacking enemy Heavy Infantry. The attacker still wins but will take heavy losses.

The situation can be greatly improved by setting the preferred size of flank to 10. This reduces average length of the battle by ~35%, morale losses by ~35% and manpower losses by ~45%.

Multiple armies[edit | edit source]

Example deployment of multiple armies

Two armies of 5 Heavy Infantry and 5 Light Infantry versus one army of 10 Heavy Infantry and 10 Light Infantry. The defending army deploys normally, 10 Heavy Infantry at center surrounded by Light Infantry (5 on each side).

The attacking armies deploy independently. The first army deploys with 5 Heavy Infantry at center surrounded by 5 Light Infantry. Then the second army deploys causing 5 Heavy Infantry to surround the Light Infantry from the first army and then 5 Light Infantry surround the Heavy Infantry.

Micromanagement[edit | edit source]

Example deployment with micromanaging

The deployment can be fully micromanaged by using multiple armies. 5 Archers and 5 Heavy Infantry versus 3 Heavy Cavalry, 5 Horse Archers and 2 Light Cavalry. There is only 35% chance to win (reduced to 20% if Archers deploy first).

However with multiple armies 3 Heavy Infantry can be deployed against enemy Heavy Cavalry, then 5 Archers against enemy Horse Archers and finally 2 remaining Heavy Infantry against enemy Light Cavalry. This boosts win chance to 55%.