Wei Yan
Every time Wei Yan followed Zhuge Liang to battle, he requested to lead a separate detachment of 10,000 troops, take a different route and rendezvous with the Shu main army at Tong Pass (潼關; in present-day Tongguan County, Shaanxi). This was based on an earlier strategy used by the general Han Xin in the 200s BCE. Zhuge Liang rejected the plan because he thought that it was too risky. Wei Yan saw Zhuge Liang as a coward and complained that his talent was not put to good use.