Army Micromanagement in Frontkrieg: Stacking, Control Groups, Hotkeys

Two armies of 25 units deal roughly 40% more damage than a single army of 50 units — and that is not a feel-based balance claim, it is a direct consequence of the Frontkrieg combat formula. A stack fights at full efficiency only up to 20 units; from there the contribution of each additional unit falls linearly to zero at 50, and an army's effective-strength ceiling saturates at about 35 units. Everything you pile on beyond that eats resources, hands the enemy one fat artillery target, and adds no damage at all.

This article is for players who already have a few matches behind them, know the basic unit roles, and want more output from the same troops: how to split stacks correctly, how to use Ctrl+1…9 control groups, and which hotkeys save the most time. If you have not played yet, start with the beginner's guide.

Key takeaways in 30 seconds

• Full stack efficiency runs up to 20 units; a unit adds nothing past 50; the practical ceiling is about 35 effective units.
• The optimal working size for a strike army is 20–30 units. Anything larger only makes sense as a temporary transport convoy.
• Ctrl+1…9 control groups persist between sessions — set them once, use them all match.
• The A, . (period), C and / keys remove about 80% of manual clicking on the map.
• Micromanagement is a free advantage: it costs zero resources and is the cheapest power boost in the game.

Why one big stack loses to two small ones

In Frontkrieg an army's damage is the sum of its units' attack values multiplied by several factors: health state, morale, and the stack factor. The last one is what punishes mega-armies.

How the stack factor works

The logic is simple and unforgiving:

• Up to and including 20 units, every unit contributes 100%.
• From the 21st to the 50th unit, the marginal contribution falls linearly — the 21st still adds almost full damage, the 49th adds almost nothing.
• Past the 50th unit the army does not get stronger at all.

As a result the total effective strength saturates at roughly 35 — the midpoint between 20 and 50.

How many units to keep in one army

Here is what stacks of different sizes actually deliver:

• 20 units → 20.0 effective (100% return).
• 25 units → about 24.6 effective (98%).
• 35 units → about 31.3 effective (89%).
• 50 units → 35.0 effective (70%).
• 100 units → the same 35.0 effective (35%).

Now the comparison that matters. One army of 50 units hits like 35. Two armies of 25 units attacking the same province hit like 24.6 + 24.6 = 49.2. Same troops, same battle, 40% more damage — the only difference is that you pressed "split" before marching.

Practical rule: keep strike armies in the 20–30 unit band. Go above 30 only when you knowingly trade efficiency for one heavy blow against a fortified target, or when you move reinforcements through friendly territory as a single convoy.

There is a second reason to avoid mega-stacks: artillery. One barrage against a 60-unit stack touches the whole mass at once, while three separate 20-unit armies force your opponent to pick a target and spend three turns instead of one. Details are in the artillery guide.

Control groups: Ctrl+1…9

Frontkrieg has classic RTS control groups — a rarity in browser grand strategy, where you usually hunt for your armies by eye every single session.

Assigning and recalling

• Select an army (or several) → Ctrl+1…9 binds the selection to a slot.
• 1…9 instantly selects the armies in that slot.
• Double-tap a digit (within ~350 ms) selects the group and centres the camera on it.
• Ctrl (or Cmd) + digit over an occupied slot overwrites the group.
• Slots appear as a row of chips in the desktop HUD: click to select, double-click to select and centre.

The big win: groups persist between sessions. You log in on day two of a match, press "3", and your southern front is already selected. On mobile the chip row is hidden, so army selection there goes through the army list.

Which groups are worth creating

A layout that survives a match across 4,800 provinces:

• 1 — main strike army (the one leading your offensive).
• 2 — second wave / reserve, 1–2 provinces behind the spearhead.
• 3 — capital and key fortress garrisons.
• 4 — artillery group, moved separately from infantry.
• 5 — fleet or amphibious force, if the match is a naval one.
• 9 — scouts (cheap fast units you use to lift the fog).

Do not create a group per army. Groups work because there are few of them and each one means a role, not a spot on the map.

The hotkeys that save the most time

These work on the game screen whenever the cursor is not inside an input field:

• A — select your next army and centre the camera on it; Shift+A — the previous one.
• . (period) — jump to the next army with no orders, cycling. The single most valuable key in the game: a few presses find everyone standing idle.
• C — centre the camera on your capital.
• / — map search: find a province, city or nation and jump to it.
• Esc — close an open panel; with no panel open, clear the selection.
• ? — open the help sheet with the full key list.

A five-minute turn checklist

Run this sequence every time you enter a match:

1. C — camera on the capital, check production and resources.
2. . — cycle every army with no orders; each one either gets a target or merges into a neighbouring stack.
3. Confirm no strike stack has grown past 30 units; split the excess into a second army.
4. 1 and 2 — look at the spearhead and the reserve: the reserve belongs 1–2 provinces behind.
5. 4 — confirm the artillery is not ahead of the infantry and not sitting unescorted.
6. / — check the 1–2 border provinces where you expect a counterattack.

Five minutes of this daily beats an hour of frantic clicking once every three days. More on fitting the game into a real schedule over on the blog.

Common micromanagement mistakes

• The "one big army" habit — the most common error. Sixty units in one stack is 35 effective units and a single artillery target.
• Artillery stacked with infantry on the march. Different speed, different role: keep it as its own group.
• Groups organised by geography instead of role. "Group 1 is everything up north" breaks the moment the front shifts.
• Armies with no orders. Every unit standing without a target is a wasted day of upkeep. The "." key exists for exactly this.
• Splitting a stack after contact. Split before the march; splitting mid-engagement only costs you tempo.

How these principles map onto specific unit roles and counters is covered in the unit types and counters guide, and march speed and timing in the logistics guide.

Frequently asked questions

What is the optimal army size in Frontkrieg?

20–30 units. Up to 20 a stack runs at full efficiency; up to 30 the loss is still small (about 10%); beyond that every unit added costs resources and adds almost no damage. The efficiency ceiling is roughly 35 units regardless of the stack's real size.

Is there any point building an army of 100 units?

Not for fighting. A 100-unit stack hits exactly as hard as a 50-unit one — around 35 effective units. The only justification is a one-off reinforcement convoy in friendly territory, which you should split immediately on arrival.

Do control groups survive logging out?

Yes. Ctrl+1…9 groups are tied to the specific match and are restored on your next login, so you only configure them once.

Do hotkeys work on a phone?

No — keyboard shortcuts and the control-group chip row are a desktop scenario. On a phone the same actions are available through the army list and the interface panels; see the article on playing from a phone.

Conclusion

Army micromanagement in Frontkrieg is the cheapest edge available: it costs no resources and delivers up to 40% more damage from the same troops. Keep stacks in the 20–30 unit band, organise Ctrl+1…9 groups by role rather than geography, and run the five-minute checklist with C, "." and "/" every time you log in.

The historical context is not invented either: dispersal of force and the problem of commanding oversized formations were central concerns for the staffs of World War I, the first conflict in which armies grew too large for a single commander to see whole.

Frontkrieg is free with no pay-to-win, and a new match starts every day — up to 500 players and 70 AI nations on a 4,800-province map. Head to the lobby and test the stack math yourself.