Oath-Bound Command Trust / 盟誓约束下的统帅信任
Oath-bound command trust / 盟誓约束下的统帅信任 is the political mechanism 《资治通鉴·周纪》57丨古代发毒誓还有这作用？ uses to answer why ancient actors might make a severe oath before a campaign. 甘茂 does not ask 秦武王 for encouragement in the abstract; he asks for a publicly legible commitment that can survive future slander and delay.
The source’s case is the Qin attack on 宜阳. Gan Mao believes the campaign will be hard, and that 樗里疾 / 樗里子 and the Gongsun faction will attack him once the siege drags on. By invoking rumor erosion of trust through 曾参 and 乐羊, he makes Qin Wuwang acknowledge the risk before troops move.
The oath at Xirang converts trust into a constraint. If Qin Wuwang later listens to slander and recalls Gan Mao, the king is not merely changing policy; he is breaking a sworn commitment made before Heaven and before the minister who exposed the risk in advance.
《资治通鉴·周纪》58丨赵武灵王如何打造强国 tests the mechanism. When the siege has lasted five months and court opponents push Qin Wuwang to recall Gan Mao, Gan Mao invokes “Xirang.” Qin Wuwang sends more troops, Gan Mao takes Yiyang, and the oath becomes a working command-support device rather than only a pre-campaign promise.
Key Claims
- A ruler’s promise can become strategic infrastructure for a long campaign.
- An oath is useful when the main risk is not initial authorization but mid-course abandonment.
- Public commitment narrows the ruler’s later ability to blame the commander alone for predictable delay.
- The mechanism depends on prior risk disclosure: Gan Mao first names the likely accusations, then asks Qin Wuwang to bind himself against them.
- The later reinforcement decision shows the oath working at the exact moment of pressure it was designed for.