Fu Yan listened carefully to General Liu's question, and breathed a sigh of relief, when he was interrupted just now, his heart was about to jump out, he thought that he had said something wrong, it turned out that he was questioning the speed of the enemy's march.

Fu Yan organized his own language and explained, "General Liu, you are also an old fighter, but you didn't react for a while, let me explain it to you."

The marching speed of 10 kilometers to 15 kilometers per day that you are talking about, that is the Houjin army fighting in the territory of Gyeonggi in the Ming Dynasty.

Militarily speaking, it was an external battle, and the cavalry units of the Houjin Army, in addition to marching every day, had to leave enough to deal with the Ming officers and troops who came to intercept at any time.

On top of that, in addition to this, they also needed to go out to the countryside to loot goods and food, and carry a large number of clothed auxiliaries without horses to carry supplies.

According to statistics, they captured at least 100,000 people in the Gyeonggi region, which greatly slowed down the enemy's march. ”

Then, Fu Yan pointed to the location of Shenyang on the map and continued: "Fuzhou is about 250 kilometers away from Shenyang.

The process of Houjin sending troops to attack Korea in the last years of the Apocalypse should be clear to most of you here, after all, it was a war that our army started.

In that war, there were many real-life examples showing that the speed of the pure cavalry of the Houjin army ranged from about 50 to 70 kilometers per day when there were supplies along the way.

The Houjin troops who were on guard in Shenyang had at least 50,000 cavalry troops in their hands, and once they sent more than one percent of the cavalry troops at will, then our troops attacking Fuzhou were likely to be besieged by them, and the situation would be embarrassing at that time. ”

When Chen Xin heard this, he couldn't help but nodded, the information on the battle examples in the early days of the founding of the army could be remembered so clearly, and he came as soon as he opened his mouth, there was no mistake or omission, Fu Yan deserved to be an excellent graduate of the martial arts hall, and he was a talent.

Fu Yan gave Chen Xin a profound image, this time, Chen Xin really remembered this young officer, and in the future, when choosing candidates for some important positions, this memory will be of great help to the parties.

Chen Xin silently thought that at a meeting like this, more young officers should be allowed to attend, even if they can't express any unique opinions, they can be regarded as giving young people a space to perform.

On the other side, General Liu also couldn't stop nodding.

He had not participated in the initial campaign of the Korean conquest, so it was not clear that the Houjin side could have such a strong marching ability.

At this moment, after listening carefully to Fu Yan's explanation and clarifying the cause and effect, he suddenly realized.

Immediately, however, he thought that something was wrong.

He stood up again, walked to the map, pointed to the map on the wall, pointed to the section of the Fuzhou River that widened like a sea, and said, "When our army retreats, it may not be necessary to take the land route."

About 20 kilometers south from Fuzhou, it is the confluence section of the Fuzhou River, turning back from Liujiatun all the way to the north, passing through Songjiatun and Sunjiatun along the way, and there are tidal flats where fast crab class boats can be moored everywhere.

There are several of them, and they can even hide from the wind and waves, and our coast guard can send a fleet to find a suitable base there.

If a large force of Houjin cavalry is discovered, the infantry battalion can retreat south and board ships at the base, rather than having to return to Jinzhou by land.

In the future, Jin's landlubber level, facing the fleet of our army, can only look at the sea and sigh! ”

After all, he didn't graduate for a long time, he only interned in the Ranger Regiment, Infantry Regiment and other teams, although he had joint exercises and operations with the Navy during the period, but after all, he didn't really have an in-depth understanding of relevant knowledge, which made him feel a little embarrassed.

At this time, Tong Ziyuan, the person in charge of the Navy of the General Staff Department, came out and patted Fu Yan on the shoulder, alleviating Fu Yan's embarrassment.

"I'll leave this question to me, a naval professional, to answer it."

He also walked to the map and said, "There is an effective tactic in military affairs that has been passed down for thousands of years, called half-crossing and attacking, and boarding ships has the same reason.

You know, loading things on a ship is a math problem that requires rigorous calculations, and if you don't calculate the center of gravity well, you may capsize the ship when you encounter a slightly larger wind and waves.

Moreover, the space on the ship is separated, and if you want to load people or materials on it, you need to fill one compartment after another in order, and slowly fill it, and once the action is too aggressive in the middle, it may cause non-combat attrition.

In the inlet section of the Fuzhou River, there is no pre-built wharf, and the tidal flats there are not suitable for wharf.

Therefore, to transport people to a large ship, it is necessary to use a small boat to do the intermediate transshipment work, which is really extremely time-consuming.

If Houjin's reinforcements follow our army with cavalry troops, how will our army's 3,000-strong army be transferred and boarded?

When 3,000 people are in a tight military formation and the firepower is intensive, our army can also deter and kill the enemy's cavalry units.

However, once more than half of our troops are withdrawn and there are only less than 1,000 men and horses left on the shore, how can our army resist all the cavalry on the Houjin side?

The battleships of the navy could not enter the Fuzhou River, and the little guns on the small gunboats of the coast guard could not stop the onslaught of a large number of cavalry at all. ”

General Liu carefully simulated the scene that Tong Ziyuan said just now in his mind, and the results of the simulation made him speechless for a while.

In the past, our troops were facing weak enemies, so we were always on the offensive and thinking about how to transport our men and horses to the shore.

It is easier to land on the beachhead in front of the enemy, and the troops who rush ashore first will storm out an open field under the cover of artillery fire, and then form a formation in the open field to prevent the enemy from approaching.

In that scenario, there are still a large number of reinforcements waiting to go ashore on the transport ship behind, even if the battle situation is unfavorable, there is still hope that the soldiers can maintain the will to fight.

However, retreating in front of the enemy is completely different, the sooner the boat is safer, and the troops left to the last to block the attack are easily entangled by the enemy.

By that time, the ship's artillery would have no effect, and the last troops remaining on the shore would probably be besieged and killed by the enemy.

Of course, there is still a certain amount of flexibility in the number of troops that can survive in the end, and the difference between this is only how big the enemy's appetite is, and how many casualties he is willing to bear to destroy his own best troops.