Clan Wars and Clan War Leagues are two of the most structured, competitive parts of Clash of Clans, and while they share the same basic idea, two clans fighting for stars by attacking each other’s bases, they operate on different schedules, formats, and reward systems. Regular Clan Wars can be started at any time a clan’s leadership chooses, while Clan War Leagues run on a fixed monthly schedule with a completely different structure and a much bigger long-term payoff. Understanding how each mode works, and how to prepare for them, matters for any player who wants to contribute meaningfully to their clan rather than just donating troops and hoping for the best. This guide covers both regular Clan Wars and Clan War Leagues in detail. For general progression and village-building basics, check out our complete Clash of Clans guide.
How Regular Clan Wars Work
A regular Clan War is initiated by a clan leader or co-leader and matched against another clan with a similar overall war weight, based on troop, spell, and hero levels across the roster. Once matched, the war moves into Preparation Day, a period where no attacks happen but players can rearrange their base layout specifically for war, since war bases don’t need to protect resources, only deny stars. After Preparation Day ends, War Day begins, and each participating member gets two attacks to use against any base in the opposing clan, not just the one matched to their position on the war map. Each attack can earn zero to three stars based on destruction percentage and whether the Town Hall and all structures are destroyed, and the clan with the most total stars at the end of War Day wins, with total destruction percentage used as a tiebreaker.
Star Rules and War Map Basics
The war map lists every participant from both clans, roughly ordered by war weight, but this order is only a suggestion, not a restriction, and skilled attackers often “clean up” bases below their own position after weaker attackers have already spent one of their two attacks. A single base can be attacked by multiple members of the opposing clan, but stars earned against an already-destroyed base don’t add further value beyond what was already achieved, so coordinating who attacks which base, and in what order, is a key part of effective war strategy. Clans that communicate through in-game chat or external tools like Discord to call targets and avoid duplicate attacks consistently outperform clans that attack without coordination.
What Makes Clan War Leagues Different
Clan War Leagues, commonly abbreviated CWL, is a separate, once-a-month competitive season rather than an on-demand war. Instead of a single war, CWL runs as a seven-day gauntlet, with your clan grouped alongside seven other similarly matched clans and facing a new opponent from that group each day for seven consecutive war days. Unlike regular Clan Wars, each player gets only one attack per war day in CWL, not two, which puts a much higher premium on precision and preparation since there’s no second attempt to fix a mistake. Clans climb or fall through a tiered league system, from the lowest bronze tiers up through the higher tiers including Champion and beyond, based on their performance across the seven-day season, and league placement resets and re-qualifies each month based on the previous season’s results.
League Medals and Why CWL Is Worth the Commitment
The biggest reason experienced players prioritize Clan War Leagues over casual Clan Wars is League Medals, which are earned based on individual star performance during the season and scale significantly with the league tier your clan competes in. League Medals can be spent on Hammers and other high-value progression items that are difficult or impossible to obtain as efficiently through any other regular activity in the game, making CWL the single most valuable recurring event for players focused on long-term account progression rather than casual play. Because rewards scale with league tier, clans have a strong incentive to build a competitive roster and take each war day seriously rather than treating CWL as an obligation.
Building a Roster for Clan War Leagues
CWL rosters are typically limited to a set group of players selected before the season begins, since only players who are in the roster can participate across the full seven-day season. Clan leadership generally prioritizes players with strong, reliable attackers and consistent activity, since a player who misses an attack costs the clan a chance at that base’s stars entirely. Because each war day only allows one attack per player, roster strategy also involves matching stronger attackers against higher-value targets and being realistic about which players can consistently deliver three stars against the opponent’s Town Hall range, rather than simply filling the roster with the clan’s highest-level members regardless of attacking skill.
War Weight, Matchmaking, and Fair Fights
Both regular Clan Wars and Clan War Leagues rely on matchmaking systems that attempt to pair clans of similar overall strength, factoring in troop, spell, hero, and base levels across the roster. Because this system looks at aggregate strength rather than a strict Town Hall count, a clan with a wider range of Town Hall levels can still be matched fairly against an opponent with a narrower but more heavily upgraded roster. This is why war bases matter just as much as attacking skill, since a well-designed defensive layout can hold off a higher Town Hall attacker long enough to deny a third star even in a mismatched-looking pairing.
Preparing Your Base and Army for War
Because war bases exist purely to deny stars and don’t need to protect resources, war base design should prioritize the defensive principles covered in dedicated base-building resources, particularly compartmentalization and defensive overlap, tuned specifically against the attack strategies common at your Town Hall level. On the attacking side, since Clan War Leagues offers no second attempt, practicing your intended attack strategy in regular Clan Wars or Friendly Challenges beforehand is far more valuable than experimenting for the first time during a CWL war day. Treat every regular Clan War as low-stakes practice for the higher-pressure, higher-reward environment of Clan War Leagues, where consistent execution matters more than any single flashy attack.