作戰

作戰 (zuo zhan) is often mistranslated as 'waging war' in the sense of fighting battles. The chapter is actually about the economics of military operations — the logistics, costs, and fiscal strain of sustained campaigning. A more precise translation would be 'initiating operations.'

馳車 (chi che, 'swift chariots') were light, fast four-horse war chariots. 革車 (ge che, 'leather wagons') were heavy supply wagons covered with hide. By the late Warring States these numbers were conventional rather than precise — infantry had largely supplanted chariot warfare.

千里 (qian li, 'a thousand li'): one li in the Warring States period was approximately 415 meters, so a thousand li is roughly 415 km. This represents a major expeditionary campaign far from home territory.

膠漆之材 ('materials for glue and lacquer'): glue (膠) and lacquer (漆) were essential military supplies used to reinforce bows, seal armor, and maintain chariots. Their mention here underscores Sunzi's attention to logistics.

拙速 (zhuo su, 'clumsy haste') vs 巧之久 ('clever delay'): this is one of Sunzi's most famous maxims. The point is not that haste is admirable, but that even a flawed quick campaign is preferable to a brilliantly managed but protracted one. The costs of delay always outweigh the costs of imperfection.

諸侯乘其弊而起 ('the rival lords will exploit your distress'): this reflects the multistate reality of the Warring States period. Any prolonged campaign weakened you relative to the other six major states, who would seize the opportunity to attack.

役不再籍 ('does not conscript twice'): the general mobilizes once and finishes the campaign before needing to call up reinforcements. 糧不三載 ('does not load supply trains three times'): provisions are sent from home only twice at most — the first supply and one resupply — after which the army sustains itself from enemy territory.

因糧於敵 ('forage on the enemy') became a foundational principle of Chinese military logistics. It anticipates by two millennia the principle Napoleon would articulate as 'an army marches on its stomach' — and goes further by insisting that stomach should be filled from enemy granaries.

丘役 (qiu yi, 'corvee of the district'): the system of compulsory labor service owed by commoners to the state. In wartime, these demands intensified drastically — peasants were conscripted both for military service and to transport supplies, devastating agricultural production.

蔽櫓 (bi lu, 'mantlets and siege screens') were mobile wooden shields used to protect soldiers during sieges. 丘牛 (qiu niu) were large draft oxen used to haul heavy military equipment.

The percentages (seven-tenths and six-tenths) may be conventional rather than precise, but the underlying argument is concrete: war consumes the surplus that sustains the state. This economic analysis of warfare was remarkably sophisticated for its era.

鍾 (zhong) was a unit of grain measurement in ancient China, approximately equal to 6 hu 4 dou (roughly 64 liters or about 50 kg of grain). The twenty-to-one ratio reflects the enormous cost of overland transport: most of the grain sent from home was consumed by the transport workers and draft animals en route.

萁稈 (qi gan, 'bean stalks and straw') refers to animal fodder. 石 (dan/shi) was a unit of weight, approximately 30 kg in the Warring States period.

怒 (nu, 'rage') and 貨 (huo, 'reward/goods'): Sunzi identifies two distinct motivational levers. Rage must be cultivated to make troops fight fiercely; material reward must be offered to make them seize enemy assets rather than simply destroy them.

卒善而養之 ('treat captured soldiers well'): this policy of incorporating enemy troops was both pragmatic and humane. It simultaneously reinforced one's own army and denied manpower to the enemy — a principle later emphasized by many Chinese commanders.

司命 (si ming, 'arbiter of fate') originally referred to a deity who controlled human lifespans. Sunzi applies it to the general to emphasize the awesome weight of military command — the lives of the entire population rest on his decisions.

This closing line reframes the entire chapter: what seemed to be a dry discussion of logistics and economics is actually about the supreme responsibility of command. A general who does not understand the economics of war will bankrupt his state and doom his people.