Reinforcing an alliance-mate under attack is one of the clearest ways to help, but the value depends heavily on timing — reinforcements that arrive after the fact provide far less benefit than ones in place before the attack lands.
React to rally warnings immediately
Most attacks give some advance warning before they land. The moment you see a call for reinforcements, treat it as time-sensitive — a quick response, even a partial one, is worth more than a larger contribution that arrives too late.
Understand your own march speed
Knowing roughly how long your troops take to reach a common ally or territory point helps you judge in advance whether you can realistically respond in time to a given threat, rather than finding out too late that you couldn't have made it anyway.
Prioritize based on actual need, not convenience
If multiple reinforcement calls come in at once, prioritize the one where your specific troops or hero would make the most difference, rather than defaulting to whichever request you saw first.
Build reinforcement response into your alliance culture
Alliances where reinforcing is a fast, automatic reflex for most members consistently outperform alliances where it's occasional and inconsistent — this is a culture worth actively encouraging, not just hoping happens.
