Battleplan Supply Lines Explained: How to Keep Your WWII Armies Fueled and Fighting
Master battleplan supply lines in this WWII RTS: place depots, read the supply view, cut off enemy logistics, and keep your armored spearheads moving.
If you have ever watched a flawless armored breakthrough grind to a halt three miles from the objective, you already understand why battleplan supply lines matter more than raw firepower. In Battleplan, ammo, fuel, and food are tracked at the company level, and a division that outruns its depots starts shedding morale, combat effectiveness, and eventually soldiers. Getting battleplan supply lines right is the difference between a decisive encirclement and an offensive that surrenders to its own logistics.
Why Logistics Beats Tactics in Battleplan
Battleplan's design team leans hard into the old military maxim that amateurs talk tactics while professionals study logistics. Every company in your order of battle carries its own supply pool, representing ammunition, fuel, and rations. Let that pool run low and the unit suffers stat penalties across the board. Let it hit zero and attrition begins — troops desert, wounded go untreated, and the formation's health steadily drains. In combat, units that are low or out of supply surrender with startling speed.
The division-wide view is where things get uncomfortable. A single armored division can burn through more tonnage per hour than it receives, producing a deficit that quietly guarantees a future collapse. The only two levers you have are movement and tempo: pull the division closer to a depot, or make it stop moving and fighting long enough to catch its breath. Consumption while idle is modest. Consumption while marching or brawling is enormous, and it only climbs when you stack artillery barrages and air operations on top.
The Three Layers of the Supply Chain
Understanding which piece of the network you are actually adjusting saves a lot of wasted clicking. Supply flows from fixed hubs into depots you control, and then out to divisional headquarters.
| Layer | What It Does | Can You Move It? | Can It Be Captured? |
|---|---|---|---|
| Supply Hub | Fixed map point (port, rail junction) that generates supply flowing into the battlefield | No | Yes — but a captured hub produces nothing for the new owner while cutting off the original owner |
| Supply Depot | Holds supply and pushes it toward your headquarters; limited slots per mission | Yes — by dismantling and rebuilding | Yes |
| Divisional HQ | Receives from the depot and distributes to subordinate companies | Yes, it follows the division | Effectively, by being overrun |
The transfer rate between a depot and a headquarters is not a fixed number. It scales with distance and terrain — a depot sitting right next to a headquarters on good ground pushes supply far faster than one positioned across rough country several miles back. Slitherine's own developer diary on Battleplan supply breaks this down with screenshots showing the hourly tonnage difference between a close depot and a distant one. That single mechanic is why "just push the depot forward" is real advice and not busywork.
Setting Up Battleplan Supply Lines Before the First Shot
Preparation-phase construction and demolition are instant. Once the mission clock starts, both take real minutes. That asymmetry is the single most important thing to internalize, because it means every depot decision made after the shooting starts is a decision you pay for in lost combat time.
Here is a pre-mission routine worth repeating on every map:
| Step | Action | Why It Matters |
|---|---|---|
| 1 | Switch planning to Readiness mode | You can draft new orders all day instead of being locked into one planning window |
| 2 | Open the supply overview | You cannot defend terrain you have not looked at |
| 3 | Count your depot slots | Most missions hand you only four, and that number never grows |
| 4 | Delete and re-place depots in deployment | It is free before the clock starts and slow afterward |
| 5 | Identify the axis of your armored thrust | Tanks burn supply faster than anything else on the field |
| 6 | Pre-position a depot behind the breakthrough point | Your spearhead will outrun its network within a day |
A practical habit from community playthroughs: put one depot with your armored fist, one behind your main infantry line, and keep the remaining slots flexible. Slack capacity in the rear is wasted capacity. You will almost always want to relocate a rear depot forward the moment a village or crossroads falls into your hands.
What Actually Drains Your Supply Network
Not all activity costs the same. Knowing the consumption tiers lets you predict which formation is about to break down.
| Unit State | Consumption | Notes |
|---|---|---|
| Idle in place | Low | Fortification level keeps climbing the longer they sit |
| Moving inside friendly territory | Moderate | Cheap compared to combat, but not free |
| Engaged in combat | High | Every minute of contact is expensive |
| Conducting artillery barrages | Very high | Barrages are the single biggest supply spike |
| Air squadrons | Special | Aircraft must be rebased when their depot moves, or they run dry |
Out-of-supply aircraft announce themselves with flashing yellow lettering on the squadron icon — a warning plenty of new commanders miss entirely. If you dismantle the depot feeding your air wing and never issue a rebase order, those planes will still fly, just far less effectively. There is a dedicated resupply order in the game, but it only works on supply points, so it is not a blanket fix for a starving division.
Attacking Without Outrunning Battleplan Supply Lines
The offensive doctrine that works in Battleplan is a two-part machine, and it mirrors what actually happened in the Normandy campaign.
Step one: send an armored division through the enemy line on a breakthrough order. It moves fast, hits hard, and should be pointed at enemy depots whenever your scouts have located them. Capturing a depot is the single best outcome of any attack — you inherit the tonnage and the defender loses it.
Step two: have an infantry division follow immediately behind on a seize ground order to hold the corridor the tanks punched open. Without that follow-up, the breakthrough becomes a salient with no supply path, and the tanks that looked unstoppable will stall out of fuel and ammo within a day or two.
| Role | Order Type | Primary Job | Failure Mode |
|---|---|---|---|
| Armored division | Breakthrough | Punch deep, grab enemy depots | Runs dry if nobody holds the corridor |
| Infantry division | Seize Ground | Occupy and hold the corridor | Too slow to exploit alone |
| Air recon | Recon | Reveal enemy depots and units | Wasted if never rebased |
| Attack aircraft | Close support | Soften the breakthrough point | Runs out of supply at the worst moment |
| Engineers | Mine clearing | Open the spearhead's route | Leaves the advance stalled on obstacles |
Scouting feeds this entire system. Recon doesn't just show you where the enemy is — it marks units, which cuts their morale and defenses, improves the accuracy and damage of your artillery, and reveals enemy supply points. That last part is the whole ballgame: you cannot cut a supply line you haven't found.
Cutting Off Enemy Supply Lines
Encirclement is the most efficient kill in the game. A surrounded formation that still has a stocked depot will fight on until the tonnage runs out, then collapse into attrition and rapid surrender. A formation that pushed forward aggressively and lost its connection to a depot entirely is already dead — it just hasn't stopped moving yet.
Practically, this means your breakthrough should aim at the enemy's rear and their depots rather than at the closest victory point. Fold a flank onto the enemy's center, cut the road behind them, and let logistics finish what your artillery started.
| Enemy Situation | Your Best Response |
|---|---|
| Holds a stocked depot but is encircled | Wait them out; keep pressure on so they cannot break out |
| No depot connection at all | Pin them in place; they will wither and surrender |
| Depot located by recon | Route your attack path directly through it |
| Fortified defenders | Artillery first to strip fortification, then assault |
Because tank divisions move so much faster than infantry, it is easy to end up several sectors ahead of anything your network can reach. Player experience suggests pausing the game whenever a plan completes — that is your cue to check deficits, relocate a depot, and draft the next two orders before unpausing.
Common Battleplan Supply Lines Mistakes
| Mistake | Fix |
|---|---|
| Grabbing ground with armor and never following up | Queue an infantry seize-ground order behind every breakthrough |
| Leaving depots parked in the rear all mission | Dismantle and rebuild forward as territory changes hands |
| Removing an air squadron's depot without rebasing | Issue the rebase order immediately |
| Ignoring night | Use the nighttime lull to reposition depots and read battle reports |
| Chasing victory points instead of depots | Enemy depots are worth more than most objectives |
| Waiting until a plan finishes to start planning | Always have the next two orders in the pipeline |
The through-line is tempo. Depots take minutes to build and tear down, so every supply decision is really a decision about the next two days of the campaign. Plan the war, not the battle.
FAQ
How many supply depots do I get in a Battleplan mission? Usually four, even on large maps. You can dismantle and re-place them freely, which is why forward placement matters so much — a depot slot sitting idle in the rear is a slot you aren't using.
Can I move a supply depot after the mission starts? Yes, but it isn't instant. Dismantling takes several minutes of real time, and rebuilding takes several more. During deployment, both are instantaneous, so do your rearranging before the clock starts.
Why did my units suddenly surrender when they looked fine? They were almost certainly out of supply or cut off from their depot. Low-supply units take stat penalties and break quickly in combat, and fully unsupplied units take attrition and surrender almost immediately. Check the supply overview before you blame your tactics.
What's the fastest way to repair broken battleplan supply lines mid-offensive? Free up a depot slot, place it directly behind your armored spearhead on the best terrain available, and pull the division back toward it if the deficit is severe. If aircraft are the problem, issue a rebase order rather than waiting for the flashing warning to resolve itself.