Liu Gongquan's famous calligraphy works include Shen Ce Jun Bei. What does Shence Army mean?

A branch of the imperial army, the most important imperial army in the middle and late Tang Dynasty-Shence Army. In 754 AD (Tianbao 13), the imperial court set up a new border guard to defend Tubo, which was called Shence Army (soldiers should be raised). After the Pingan Rebellion, eunuch Yu Chaoen was stationed in Shaanxi, and many elite northwest frontier soldiers and tens of thousands of soldiers were recruited. In the first year of Yongtai, when Tubo invaded, Yu Chaoen officially became the central imperial army in the garrison garden, and collected many elite buffer region troops, which were stationed in the left and right compartments of Ce Shen and changed to the Shence Army around Dezong. The main commanders of the two armies are the guards' lieutenants and lieutenants, all of whom are eunuchs, thus establishing the system that eunuchs command the Shence Army. At the same time, the border guards are often under the command of the Shence Army, which is called Ce Shen Camp, and the Shence Army also reached its peak at this time. In addition to guarding the palace, the Shence Army is also responsible for defending against foreign enemies and calming domestic troubles. In 783 AD, he fought to the death and made outstanding achievements, and finally developed to support1.5000 troops. However, this is the army that the emperor mastered through the hands of slaves, and other officials can't intervene except trusted eunuchs. Eunuchs became more and more arrogant and gradually monopolized power. They used their power to constantly increase the salary and promote officers for the Shence Army, which led to the Shence Army's indulgence and low morale, and gave the buffer region the excuse of "clearing the monarch" and sent troops for many times. In order to withdraw from the buffer region, the emperor had to kill eunuchs, and his imperial power was lost. By the end of the Tang Dynasty, the five imperial armies were outnumbered and existed in name only.