To score Arms Race unit training points when your Drill Grounds are at maximum capacity in Last War, upgrade existing lower-tier soldiers rather than recruiting fresh units. Promoting replaces an existing unit in your standing army instead of occupying a new slot, requiring zero open Drill Ground space while awarding event points for the tier increase.
Why Full Drill Grounds Block Recruitment
Completing new soldier training at your Barracks requires available space in your Drill Grounds. When your Drill Grounds hit maximum capacity, finished units cannot leave the Barracks. Floating unit icons remain stuck over the buildings, which locks your recruitment queues and prevents you from starting new training batches or using speed-ups to hit event milestones.
Promotion bypasses this bottleneck entirely. Because an upgraded unit overwrites an existing soldier in your roster, the Barracks queue can finish and clear instantly even when your grounds are at 100% capacity.
| Method | Drill Ground Space Required | Resource Investment | Event Scoring Basis |
|---|---|---|---|
| Fresh Recruitment | 1 open slot per unit | Full base recruitment cost | Full points for recruited tier |
| Direct Promotion | 0 open slots (replaces unit) | Tier differential cost only | Points based on tier difference |
When upgrading units—such as elevating Tier 7 soldiers to Tier 9—the system awards Arms Race and Alliance Duel points corresponding to the gap between tiers. Because you only spend the time and resources required to bridge that difference, promotions allow you to cycle through speed-ups rapidly and unlock stage-three reward chests in minutes.
How to Set Up a Low-Tier Promotion Loop
Consistently scoring points through promotions requires banking lower-tier units ahead of scoring windows:
- Recruit Low Tiers During Off-Hours: When no unit-based Arms Race window is active, set your Barracks to recruit Tier 1, Tier 4, or Tier 7 soldiers. These units train quickly with minimal resource consumption.
- Hold Low Tiers in Reserve: Keep these soldiers in your Drill Grounds as reserve point fuel rather than deploying them for combat.
- Upgrade During Arms Race: Once the unit training Arms Race begins, open your Barracks, select your low-tier soldiers, and choose the promotion option to elevate them to your highest unlocked tier.
- Use Speed-Ups in Batches: Apply short training speed-ups to complete each batch immediately, claim the milestone points, and queue the next promotion.
Clearing Space Without Low-Tier Units
If your Drill Grounds are completely filled with your highest-tier units and you have no lower-tier soldiers to promote, you must clear roster space to restart recruitment queues.
- Dismiss Units Manually: Open your Drill Grounds, select a batch of 500 to 1,000 soldiers, and dismiss them. Dismissal permanently removes the units without refunding training costs, but it immediately frees capacity so you can train new batches or cycle speed-ups.
- Route Troops to the Hospital: Attack high-level world targets, player bases, or contested map nodes to incur combat losses. Wounded troops take up Hospital beds rather than Drill Ground slots, opening the headcount needed to resume training.
Timing Your Speed-Up Usage
Arms Race stages rotate every four hours across different base tasks. Avoid rushing unit promotions or clearing Drill Ground capacity until the unit progression stage is active. Whenever possible, align your training speed-ups with corresponding Alliance Duel days (such as VS Day 5) to earn duplicate milestone rewards from the same promotion batches. Once you secure the third Arms Race reward chest, stop spending speed-ups to preserve reserve troops for the next rotation.
Free Last War Codes
Current active codes and how to redeem them.
COMMUNITY
Player Comments
120 players commented on this guide.
This helped me understand strategy much better.
Nice guide. I am checking the other Last War articles next.
This guide answered the exact question I had.
Good guide for Last War players. The strategy part was useful.