The Infantry Camp is one of three core troop training buildings in Whiteout Survival, alongside the Lancer Camp and Marksman Camp. Understanding its upgrade costs, unlock thresholds, and the cross-dependency with the Furnace is essential for keeping infantry battle-ready for Bear Hunt, Hall of Chiefs, exploration, and SvS combat.

This guide covers the full upgrade path from Level 1 through Level 30, the post-30 Fire Crystal tiers, troop tier unlocks, the promotion system, and how to prioritise the Infantry Camp alongside the rest of your city.

[!NOTE] Part of the Progression Strategy Series:

Fire Crystal Furnace Guide: The primary track for all military buildings.

How to Upgrade Furnace Fast: Optimizing your construction queue.

Embassy Guide: Managing alliance help for faster upgrades.

Overview

The Infantry Camp is a military building used to train and upgrade Infantry troops. Each upgrade does three things:

Increases Training Capacity — more troops per training batch.
Reduces Training Time — a small per-level speed gain.
Increases Building Power — adds to your total chief power.

Higher levels also unlock higher troop tiers, which is the primary reason most players push the camp upward. Tier-by-tier strength scaling is steep, so the camp's level is more strategically important than its raw stat increases.

When the Infantry Camp Unlocks

The Infantry Camp becomes buildable when your Furnace reaches Level 7. There are no quest, resource, or hero prerequisites beyond that — once Furnace 7 completes, the camp appears as a buildable structure on your city grid.

This is the same threshold for the Lancer Camp and Marksman Camp, so all three troop buildings become available simultaneously.

Troop Tiers Unlocked by Camp Level

Each Infantry Camp threshold unlocks a new troop tier:

Tier	Camp Level Required
T1	Level 1
T2	Level 4
T3	Level 7
T4	Level 11
T5	Level 13
T6	Level 16
T7	Level 19
T8	Level 22
T9	Level 26
T10	Level 30

[!IMPORTANT] T11 (Helios Infantry) is not unlocked through the Infantry Camp. It requires War Academy research after your Furnace progression has caught up.

Standard Upgrade Costs (Levels 1–30)

Lv	Furnace Req.	Wood	Meat	Coal	Iron	Base Time
1	7	—	—	—	—	2s
2	7	140	—	—	—	9s
3	7	645	—	—	—	45s
4	7	1,400	—	285	—	2m 15s
5	7	6,000	—	1,200	—	4m 30s
6	7	15,000	—	3,000	765	9m
7	7	55,000	—	11,000	2,700	18m
8	8	100,000	—	20,000	5,000	27m
9	9	200,000	—	41,000	10,000	40m 30s
10	10	360,000	—	73,000	18,000	54m
11	11	460,000	460,000	92,000	23,000	1h 7m 30s
12	12	580,000	580,000	110,000	29,000	1h 21m
13	13	830,000	830,000	160,000	41,000	1h 39m
14	14	1,100,000	1,100,000	220,000	55,000	2h 6m
15	15	1,600,000	1,600,000	320,000	81,000	2h 42m
16	16	2,000,000	2,000,000	410,000	100,000	4h 34m
17	17	3,200,000	3,200,000	650,000	160,000	5h 29m
18	18	4,300,000	4,300,000	870,000	210,000	6h 35m
19	19	5,400,000	5,400,000	1,000,000	270,000	9h 52m 30s
20	20	7,500,000	7,500,000	1,500,000	370,000	12h 20m 30s
21	21	9,500,000	9,500,000	1,900,000	470,000	16h 2m 30s
22	22	12,000,000	12,000,000	2,500,000	630,000	1d 4m
23	23	15,000,000	15,000,000	3,100,000	780,000	1d 9h 42m
24	24	21,000,000	21,000,000	4,200,000	1,000,000	1d 23h 11m
25	25	28,000,000	28,000,000	5,700,000	1,400,000	2d 18h 3m
26	26	36,000,000	36,000,000	7,300,000	1,800,000	3d 3h 57m
27	27	52,000,000	52,000,000	10,000,000	2,600,000	3d 19h 9m
28	28	69,000,000	69,000,000	13,000,000	3,400,000	4d 8h 49m
29	29	86,000,000	86,000,000	17,000,000	4,300,000	5d 33m
30	30	100,000,000	100,000,000	21,000,000	5,200,000	6d 0h 40m

Reading the Costs Table

Resource Gating: Wood is required from Lv. 2, Coal from Lv. 4, Iron from Lv. 6, and Meat from Lv. 11.
Lockstep Climb: From Lv. 8 onward, the Infantry Camp must match your Furnace level.
Speed-Up Potential: Base Time is unmodified. Real time is reduced by research, heroes (like Jasser), and alliance help.

Cumulative Cost & Time to Each Tier

Planning for T5, T7, T9, or T10 requires looking at the total climb:

Reach	Camp Lv	Wood	Meat	Coal	Iron	Cumulative Base Time
T2	4	~2.2K	—	~285	—	~3 min
T5 + Promote	13	~2.6M	~1.87M	~511K	~129K	~6h 44m
T7	19	~20.2M	~19.47M	~3.98M	~1.0M	~1d 14h
T9	26	~149.2M	~148.47M	~30.18M	~7.46M	~13d 1h
T10	30	~456.2M	~455.47M	~91.18M	~22.96M	~32d 6h

The L26→L30 Wall

Roughly 67% of the total resource cost for L1–L30 is concentrated in the final four levels. The jump from T9 to T10 is a massive investment equivalent to building the camp three times over through T9.

Training Capacity & Training Speed

Each level improves batch sizes and efficiency:

Lv	Capacity	Training Speed
1	17	0.3%
13	69	3.4%
20	126	5.3%
30	209	8.0%

Building Power Contribution

The Infantry Camp scales geometrically in power:

Level 1: ~400
Level 13: ~27,680
Level 20: ~86,360
Level 30: ~304,700 (Approx. 770× Level 1)

Construction Speed Math

Real upgrade time is reduced by a stack of multipliers:

Research: Growth tree (up to 50%+ reduction).
Heroes: Jasser (Construction hero), chief gear, and pet skills.
State Buffs: Governor buffs and event bonuses.

Total Speed Reduction	Levels 1–30 Calendar Time	Level 30 Alone
0% (base)	~32 days	6d 0h 40m
50%	~16 days	3d
80%	~6.5 days	1d 5h

Fire Crystal Levels (Post-30)

Once your state enters the Age of Fire Crystal, players at Furnace 30 can push into FC tiers:

FC1: ~23M Wood/Meat, ~59 Fire Crystals.
FC10: ~59M Wood/Meat, with multi-day build times.

Troop Promotion

Unlocking at Level 13 (T5), the Promote function allows you to convert lower-tier troops into higher tiers by paying only the difference in resources and time.

Strategic Advantages:

Cost Efficiency: You never lose the investment made in T1–T4 troops.
Event Scoring: Promotion is the fastest way to gain points during Hall of Chiefs or SvS Troop Training days.
Fodder Strategy: Train T1 troops during off-events to "store" resource value, then promote them during scoring windows.

Construction Constraints & Lockstep

The Infantry Camp, Lancer Camp, and Marksman Camp move together in a forced lockstep climb:

Furnace Gating: Furnace level N unlocks Camp level N.
Furnace Prerequisites: Furnace level N+1 often requires all three camps to be at level N.
No Benefit to Rushing: Pushing one camp ahead doesn't bypass the Furnace bottleneck.

Upgrade Priority & Resource Bottlenecks

Priority Checklist:

Push Infantry first if: You are a rally lead, use Infantry heroes (Jeronimo, Wu Ming), or are approaching a Bear Hunt deadline.
Balanced approach: Recommended for general PvE and exploration.

Resource Phase Map:

Phase	Camp Levels	Bottleneck Resource
Early	1–10	Wood + Iron
Mid	11–22	Wood + Meat (equal)
Late	23–30	Iron (Slowest production curve)

F2P vs Spender Considerations

F2P / low-spend players

The Infantry Camp climb is dictated by your Furnace pace. Don't try to rush ahead of the Furnace — the level cap is hard, so you'll just queue up wasted research time. Focus on:

Hitting T7 (Camp 19) efficiently and holding there during Hall of Chiefs Troop Training events.
Stockpiling T1 and T2 infantry between events as cheap promotion fodder.
Using alliance help and free speed-ups rather than spending gems on construction speed.

Mid-spenders

The bottleneck shifts from resources to construction time around Furnace 22+. Speed-up packs and chief gear with construction bonuses (Jasser as construction hero) become high-value. T9 and T10 are within reach but resource-intensive — keep purchase pace aligned with troop training capacity, not just camp level.

Heavy spenders

The Fire Crystal phase is where Infantry Camp investment becomes a meaningful resource sink. FC upgrades cost orders of magnitude more than Level 30, scale slowly, and gate FC-tier troops that matter for endgame combat. Pace FC upgrades against your overall city Furnace level rather than racing the camp ahead.

Acquisition Timeline

Calendar time to reach each tier unlock varies enormously based on spend level, alliance support, and event participation. These are realistic ranges, not best-case speedruns:

Milestone	F2P / Casual	F2P / Active + Strong Alliance	Mid-spender	Heavy spender
T5 (Camp 13)	3–5 weeks	2–3 weeks	1–2 weeks	< 1 week
T7 (Camp 19)	2–3 months	6–8 weeks	4–6 weeks	2–3 weeks
T8 (Camp 22)	4–5 months	3–4 months	2–3 months	4–6 weeks
T9 (Camp 26)	7–10 months	5–7 months	4–5 months	2–3 months
T10 (Camp 30)	12–18+ months	8–12 months	6–9 months	3–5 months

[!NOTE] Active F2P assumes regular event participation, full daily quest completion, alliance gifts, and consistent gather rotation. Casual F2P assumes log-in-and-play without event grind.

When to Stop Investing

Reasonable pause points: At Lv. 19 (T7) if you need to catch up on economy, or Lv. 30 before the Age of Fire Crystal begins.
Trap: Never promote troops outside of a scoring event window.

Known Ambiguities

Iron Costs: Some reports vary between 5.2M and 5.8M for Lv. 30.
FC Sub-levels: Exact Fire Crystal counts for FC5+ can vary by server patch.
Promotion Math: While the "difference" mechanic is confirmed, granular time savings per tier are approximate.

Build alongside your Furnace, prioritize T5 for promotion, and bank your T10 push for a major construction event.

Whiteout Survival Infantry Camp Guide [2026]: Levels, Costs & Troops