《明史·本纪·卷二十一》
万历四十七年春二月十一日，经略杨镐在辽阳誓师，总兵官李如柏、杜松、刘纟廷、马林分道出塞。
四十七年春二月乙丑，经略杨镐誓师于辽阳，总兵官李如柏、杜松、刘綎、马林分道出塞。
On February 11th of the spring of the 47th year of the Wanli reign, Yang Hao, the military strategist, took the oath in Liaoyang, and the weaponry officers Li Rubai, Du Song, Liu Tingyan and Ma Lin led their troops to the frontier.
<s>[INST] Kindly elucidate the central themes in this passage in English: 四十七年春二月乙丑，经略杨镐誓师于辽阳，总兵官李如柏、杜松、刘綎、马林分道出塞。 [/INST] On February 11th of the spring of the 47th year of the Wanli reign, Yang Hao, the military strategist, took the oath in Liaoyang, and the weaponry officers Li Rubai, Du Song, Liu Tingyan and Ma Lin led their troops to the frontier.</s>
Kindly elucidate the central themes in this passage in English: 四十七年春二月乙丑，经略杨镐誓师于辽阳，总兵官李如柏、杜松、刘綎、马林分道出塞。
user
On February 11th of the spring of the 47th year of the Wanli reign, Yang Hao, the military strategist, took the oath in Liaoyang, and the weaponry officers Li Rubai, Du Song, Liu Tingyan and Ma Lin led their troops to the frontier.
assistant