Kulen is located in the middle of the Mongolian Plateau, at the southern end of the Langjuxu Mountain, and on the bank of the Tula River, a tributary of the Orkhon River, with an altitude of 1,351 meters. It is located inland and has a typical continental climate, with a minimum temperature of minus 40°C in winter, a maximum temperature of 35°C in summer, and an average annual temperature of minus 2.9°C.

It is flanked by rolling hills to the north and south, the clear Tula River flows from east to west at the foot of the Bogdor Mountains in the south of the city, and the vast grasslands are flanked on the east and west, and the city's main districts are located on the north bank of the Tula River.

It is a city steeped in history. It was founded in 1639, when it was called "Urge", which means "palace" in Mongolian, and was the residence of Jebzunba I, the "living Buddha" of Khalkha Mongolia. Jebtsunpadan is one of the eight living Buddhas of Tibet and Mongolia, and has a high status, second only to the Dalai Lama and the Panchen Lama.

For the next 150 years, Urge moved around the area. Since 1778, it has gradually settled near its current location and has taken the name "Kulun" and "Great Kulen", which means "great monastery" in Mongolian.

Wolf Juxu Mountain is a sacred mountain in Mongolia. According to the Secret History of the Mongols, Genghis Khan was buried in Mount Buerhan (where it is today), and in the Han Dynasty of China, it was called Wolf Juxu Mountain. Emperor Wu of the Western Han Dynasty in the fourth year of Yuanjia (119 years ago), the general Huo Qubing had chased and killed the Xiongnu to the wolf Juxu Mountain, and sealed the wolf Juxu Mountain to sacrifice to the sky, and the Zen ceremony was held in Guyan Mountain, the history is called "Feng Wolf Juxu Mountain, Zen in Guyan, ascending to the Hanhai, and the Lu (captive) obtained 70,000 ugly 443 levels."

Badma Dorji, who was the "prime minister" of Mongolia at the time, and the living Buddha Jebtsundamba had long been prepared for the entry of Zhang Hanqing's "Anmeng Army". They gathered the independent forces of the various league flags, recruited nearly 20,000 old-style officers and soldiers, bandit troops, and white Russian troops who were displaced in Mongolia after the fall of the Manchu Qing Dynasty, together with the slaves under the command of various royal families, and armed a total of about 30,000 people and organized into five brigades.

Under the command of Bokdog, the representative of the royal forces, they set up a defensive position under the city of Kulen, taking advantage of the geographical advantages of the mountains in the north and south and the unfavorable logistical conditions of the "Anmeng Army", hoping to drag down the "Anmeng Army" with long-lasting tactics and expecting the support of Soviet Russia. Bokdogg deployed three main brigades to the east of the city of Kulen, one to the west and one to the south of the city.

Guo Songling, Zhang Hanqing, and Ji Yiqiao convened a military meeting with officers at and above the regimental level of the "Anmeng Army." At this time, Han Linchun's department, who served as the commander of the rear army, was still a hundred miles away from here, and was mainly responsible for handling logistics and supplies. The generals unanimously decided that it would be more than enough to accomplish the task of annihilating the rebels with the existing forces without waiting any longer.

At the meeting, Zhang Hanqing said with agitation: "Our army is fighting against rebellion with the righteousness of the king's division, its morale is strong, and it is well-equipped, and this battle can lay a foundation for the situation in Mongolia and deal a heavy blow to the separatists. Tell the whole army to have breakfast in the city of Kulen! I will send a telegram to the government and set up a monument on the Wolf Juxu Mountain to commemorate the grand event of Mongolia's recovery. ”

He emphasized the significance of this battle, saying: "Since the end of the Qing Dynasty, the Mongol separatist forces have seen the weakness of the Qing court, and have been trying to rebuild the so-called prosperous era of the Mongol and Yuan dynasties at the instigation of the Russians and the Japanese. This battle is for fifty years of peace! ”

Since entering Mongolia, the Political Department has preached to the vast number of officers and men the righteousness of this operation, and has raised the stability of Mongolia to a historical achievement comparable to that of Zuo Zongtang's battle into Xinjiang. According to Zhang Hanqing's statement, the reconquest of Mongolia is of strategic significance for bringing peace to northern China for a long time, and it is also a frontal response to foreign forces' attempts to split our country. So this battle must be won, and it must be won by a big margin.

The officers and men all knew that the Anmeng army was more than one grade stronger than the other side in terms of equipment and numbers, and that this battle was of great historical significance, and everyone consciously put themselves on the high plane of heroism in recovering territory for the country. In addition, the backbone of these two divisions started from the battle to annihilate the Babu bandits, so they had contempt for the fighting power of the Mongol bandits. Therefore, the whole body was full of the idea of victory, and the morale of the battle was high.

According to the established deployment, the Anmeng Army concentrated a strong artillery unit: the divisional artillery battalion strength of the Guards Division, an independent artillery battalion, and two infantry regiments to storm the frontal defensive formation in the east of the city, led by Guo Songling. Zhang Chengde's cavalry brigade cut in from the direction of Zongmod in the south of the city, forcibly crossed the Tula River and made a detour to the rear of the formation. The divisional cavalry regiment was used as a suspect to move back and forth in the west of the city to contain and block the defenders' northward escape route. Zhang Hanqing and two infantry regiments were the general reserve.

The general principle of this battle is to maximize the purpose of damage, to make the opponent scared, not to defeat them---- with such superior firepower, numbers and training, if the opponent cannot be defeated in the front, a bunch of people can go home to nurse the child.

At 5 o'clock in the morning, a total of 36 mountain guns of the two artillery battalions rang out in unison, and the soldiers and horses of the three routes came out together, and the sound of killing shook the sky for a while. The "Anmeng Army" laughed and cheered each other on, and "going to Kulen for breakfast" became the heroic rhetoric of the "Anmeng Army."

On the frontal battlefield where the artillery regiment was located, the Mongolian army withstood a large-scale artillery attack and was scattered. Most of these people were recruited temporarily, and some of them had never even touched a gun, so how could they not be afraid when they heard the deafening roar of artillery and the painful groans of their comrades who were hit? There are those who shoot indiscriminately, those who drag their guns back, and those who abandon their guns. The infantry of the "Anmeng Army" had not yet charged, and the Mongol army itself was in chaos. No more than 100 people died in the trenches under shelling, and hundreds of people were killed by artillery fire as they fled!

Fortunately, some of the guards left by the Manchu Qing Dynasty and the veterans and bandits who stayed in Mengcheng experienced the big battle, and there were officers at all levels waving their guns in the rear.

After a round of artillery bombardment by the "Anmeng Army", the infantry regiment advanced, and the radius of the artillery attack was expanded.

Just when some experienced veterans of the Mongolian army thought that the infantry attack had begun and were ready to organize a close battle, a new round of shelling began. This time, many Mongolian troops who were arrayed were killed in piles.

The hateful "Anmeng Army" shells seemed to be endless, flying wave after wave towards the Mongolian positions. The Mongolian army only had a dozen or so small cannons left by the Manchu Qing Dynasty, not to mention the firepower, and the firing range was less than half of the artillery of the "Anmeng Army". Bokdogg commanded the front line early in the morning, and seeing the heavy firepower of the "Anmeng Army" and knowing that the eastern front was the main force of the assault, he hurriedly transferred two other troops to join the battlefield. Guo Songling was asking him to do this, but anyway, one shell would blow up a bunch, and the two bunches of people together would still be a bunch.

At first, the artillery unit was worried that the shells would be dumped too much, and it would not be long before the entire artillery unit would be denied. However, Zhang Hanqing and Guo Songling both believed that as long as they won this battle, Mongolia would have no evil battle to fight, so they advocated a severe crackdown to reflect the strength of the royal division, break the morale of the Mongolian army, and take back the hearts of the Mongolian people.

Thanks to the strong foundation of the Shenyang Arsenal, although each division of the Fengjun Army is equipped with at least one artillery battalion, their artillery shells have been completely self-sufficient since last year. After entering Mongolia this time, at least one regiment of logistics troops specially deployed artillery shells for the front line, so the Anmeng army could be handy in fighting. After half an hour of shelling as if it didn't cost money, most of the shells had been consumed. When the Mongolian reinforcements on the opposite side arrived, they ordered to fire signal flares.

Zhang Chengde's cavalry brigade, which was waiting in the south of the city, heard the rumbling of artillery in the east of the city, and his soldiers were itching and were forcibly pressed by Zhang Chengde. His force was the decisive force in this battle, and after the enemy troops in the south of the city were withdrawn, they should attack first with the rapid advantage of cavalry, and then detour behind the defenders in the east of the city, forming a two-sided attack. He anxiously awaited the order of the chief of staff, Guo Songling, to attack, and he knew Guo Duo in the Northeast Lecture Hall, Guo was a new-school officer who valued strict discipline.

"Phew!" There was a loud bang on the ground, like fireworks blooming in mid-air, it was the order to attack, and the chief of staff finally let his troops do something. Zhang Chengde perked up and shouted, "Get on the horse!" ”

He drew his saber, pulled out a sword flower in mid-air, and said loudly: "All regiments have been deployed before, attack at full speed." Don't hesitate along the way, don't take prisoners, don't dismount, don't give the enemy a chance to breathe! "Four cavalry regiments, like four torrents, rushed forward overwhelmingly. The remaining Mongolian troops were startled by the dull sound of horses' hooves and shouted in unison: "Enemy attack!" ”

At this time, although the cold weapon combat was bid farewell, China's hot weapons with rifles as the main force could not effectively kill the cavalry, so that in the non-frontal battlefield, the cavalry, as an ancient type of troops, continued on the Chinese battlefield for more than 20 years.

Since the First Cavalry Brigade was organized at the end of the first year of the Republic of China, Brigade Commander Chen Wenyun (a Japanese non-commissioned officer student) suggested that the battalion level be abolished under the cavalry regiment, the regiment should directly administer the company, and the cavalry company should be changed to Dalian with four platoons, that is, the so-called "large regiment and small company" under the jurisdiction of the cavalry regiment. After the restructuring, the cavalry regiment under the division has jurisdiction over three to four cavalry companies, with five or six hundred people; The cavalry regiment under the cavalry brigade has five cavalry companies and one machine gun company, with more than 900 people. The reduction of the number of cavalry at home and abroad at that time was closely related to the reduction of the role of cavalry at home and abroad.

After Zhang Hanqing's reorganization, the Feng army made slight changes to the establishment of cavalry: the cavalry company had 4 platoons, and the divisional cavalry regiment had 4 cavalry companies and 1 machine gun company, with about 1,130 people; The cavalry brigade is the largest cavalry establishment, with 4 cavalry regiments with 5 cavalry companies and 1 logistics battalion, with a total of about 6,100 people. This is because under the conditions that the Northeast is vast and the army is not yet mechanized, cavalry can play the role of surprise and surprise attack as a "surprise soldier".

When fighting against the Mongol army, which had no heavy machine guns and lacked artillery, the fast cavalry was indeed the natural enemy of the infantry. This is also the reason why Zhang Hanqing and Guo Songling want to use Zhang Chengde's cavalry brigade as the main force to win.

Imagine how amazing the scene of thousands of horses galloping, and some of the Mongolian troops had already dropped their guns with interest: half of the brigade stationed in the south of the city had just been transferred, and the remaining 2,500 remnants of the army could not resist this thunderous blow anyway.