Delayed Rescue Statecraft / 晚救权谋

Delayed rescue statecraft / 晚救权谋 is the intervention-timing pattern 《资治通鉴·周纪》19丨马陵之战 attributes to 孙膑 in the run-up to 马陵之战. 韩国 asks 齐国 for help after 魏国 attacks, but Sun Bin argues that helping too early would make Qi bear Wei’s full pressure while Han remains relatively unspent.

The strategy turns rescue into leverage. Qi privately reassures Han, lets Han and Wei exhaust each other, and then intervenes when Han is desperate and Wei is tired. The source treats this as morally harsh but strategically coherent: Qi gains gratitude, reputation, and better battlefield conditions at the same time.

《资治通鉴·周纪》20丨庞涓死此树下 adds the outcome of that timing choice. Once Qi enters, Sun Bin combines the delayed intervention with 减灶诱敌 and forced-march risk, leading to 庞涓’s death, Wei’s defeat, and 太子申’s capture.

Qinji 133 adds a failed version through 宋义 delaying Chu’s rescue of 赵国 at 安阳. Song Yi’s logic resembles the earlier pattern: let 秦国 and Zhao exhaust each other, then intervene after Qin is weakened. But the episode stresses the conditions that make delay collapse rather than work.

Unlike Sun Bin’s case, Song Yi’s delay lacks a stable internal command coalition. 项羽 argues that Qin may grow stronger if it takes Zhao’s soldiers and supplies, while Chu soldiers are already hungry and cold. Song Yi’s insult of Xiang Yu and trip to 无盐县 turn delayed rescue into a legitimacy failure, ending with 战时统帅斩首 before the rescue can be tested.

Hanji 159-2 reuses Song Yi’s case as a general warning against copying the “two sides fight first” formula. The episode argues that the tactic can work when state survival is not immediately at stake, but fails when the endangered ally’s collapse would strengthen the common enemy and when one’s own army cannot endure the wait.

Key Claims

• Rescue timing can be as important as the decision to rescue.
• Early intervention may transfer the ally’s burden onto the rescuer.
• Delayed intervention can convert another state’s desperation into political dependence.
• The pattern depends on credible private commitment; Han keeps fighting because Qi has secretly promised eventual help.
• The strategy has an ethical edge: the ally is helped, but only after being deliberately left in danger.
• Delay fails when the rescuer’s own army cannot sustain morale, supply, and trust during the wait.
• A delayed-rescue plan must answer the risk that the common enemy may become stronger by consuming the endangered ally.
• Hanji 159-2 adds that delayed rescue is not a portable trick; urgency, allied collapse risk, and troop morale decide whether waiting is wisdom or self-defeat.

Connections

• 孙膑, 齐威王, 田忌, and 成侯邹忌 - debate participants and decision-maker.
• 齐国, 韩国, and 魏国 - states in the rescue-timing problem.
• 马陵之战, Decreasing Stoves Deception / 减灶诱敌, and Early Warring States Interstate War / 战国早期诸侯混战 - campaign, tactic, and broader war setting.
• Encircling Wei to Rescue Zhao / 围魏救赵 - adjacent rescue pattern, focused on target displacement rather than timing.
• 宋义, 项羽, 安阳, 巨鹿, 赵国, and 秦国 - Qinji 133 failed delayed-rescue case before the Julu battle.
• Hanji 159-2 and 行势情战略评估 - later framework explaining why the same timing pattern cannot be copied across different crises.
• 同甘共苦式士气 and 战时统帅斩首 - failure mechanisms when delay undermines command legitimacy.