Ouyang Yu, who successfully abducted Verugin and Isara, and also kidnapped Alicia, the bread master, by the way, stayed in the Duchy of Gallia for more than half a month, and now the Duchy of Galia has reached a more critical moment, the imperial army has come to the capital city of Doguliz, Grand Duke of Kalia and Ouyang Yu no longer have the previous arrogance as soon as they met, and before Ouyang Yu could speak, he fully agreed to the request she had made before, and the Kingdom of San Fernando also participated in the meeting. The envoys of the Duchy of Exeter and the Duchy of Horsens, and the envoys of the three countries all brought news of their monarchs, and they also fully agreed to Ouyang Yu's previous request, hoping that Ouyang Yu could assist the four northern countries as soon as possible.

The reason why the four northern countries fully agreed to Ouyang Yu's previous conditions was because they had not fought with the imperial army before, and they still had a certain luck mentality in their hearts, thinking that they could resist the attack of the imperial army on their own, coupled with the instigation of Kalinin Molotov, the president of the Northern United Chamber of Commerce, so that the four northern countries rejected Ouyang Yu's opinion at the previous meeting.

But when the armies of the four northern countries really fought with the imperial army in the Principality of Galia, they knew how powerful the imperial army was, in fact, the imperial army that attacked the Principality of Gallia was only 10,000 people, and most of the troops fighting with the army of the four northern countries were servant troops, and the armies of the four northern countries even felt very hard to fight with the servant army of the imperial army, and they basically fought with the imperial army。

At this time, the monarchs of the four northern countries realized the power of the imperial army, without Ouyang Yu's help, according to the current speed, the imperial army can wipe out all the four northern countries in a year at most, in order to reduce the loss and not be destroyed, the monarchs of the four northern countries put aside the rhetoric of Molotov, the president of the United Chamber of Commerce, and took advantage of Ouyang Yu's visit to the principality of Gallia again, and agreed to her previous conditions.

When Ouyang Yu and the envoys of the four northern countries signed the "Treaty of Friendship and Mutual Assistance of the Northern Countries", her three fighter wings and a bomber group had already taken off from the airport, and at the same time, a large number of military instructors crossed the border between the Duchy of Lucerne and the Duchy of Gallia in trucks, and a large number of weapons and equipment were also crossed with the instructors.

From the moment of signing, the armies of the four northern countries all fell into Ouyang Yu's control, because the armies of the four northern countries wore the military uniforms provided by Ouyang Yu, used the weapons provided by Ouyang Yu, ate the food provided by Ouyang Yu, and received the training of instructors sent by Ouyang Yu.

Ouyang Yu's participation in the battle quickly blocked the attack of the imperial army, but Ouyang Yu did not order the air force to bomb the logistics base and supply lines of the imperial army, but only let the fighters of the air force participate in the battle on the front line, this is because although the treaty has been signed, but she also needs the imperial army to continue to cause huge pressure on the four northern countries, if the imperial army is killed and driven out of the principality of Gallia at once, it is difficult to guarantee that the four northern countries will not tear up the treaty, so the invading imperial army still needs to stay, as long as the process of the battle is well controlled, the imperial army will become Ouyang Yu's best helper, helping her control the army and economy of the four northern countries in her hands。

After returning to the Duchy of Lucerne with the "Treaty of Friendship and Mutual Assistance of the Northern Countries" with the four northern countries, Ouyang Yu was satisfied, and after dealing with the corresponding matters, she quietly returned to her original territory Alsace Town with her personal guards, and she finally had time to play another copy to further enhance her strength.

The Spanish Civil War (July 17, 1936 – April 1, 1939) was a civil war fought in the Second Spanish Republic, in which the Republican Government Army of the President of the Republic Manuel Azagna and the Left Alliance of the Popular Front fought against the right-wing groups such as the Spanish National Army and the Falangists centered on Francisco Franco; The support of the Kingdom of Italy and Portugal, because of the clash of Spanish ideologies and the proxy war between the Axis and the communist powers, made the Spanish Civil War considered a prelude to the outbreak of World War II.

The main reason for the outbreak of the Spanish Civil War was the various social contradictions in Spain at that time, the attacks of the left and right wingers, the failure of government reforms, and the dissatisfaction of the old forces and religious figures. In addition, the war was the first to be bombed by aircraft against tanks and the first to be bombed on an undefended city, and the war was also of great international attention, with novelist Ernest Hemingway, British social critic and journalist George Orwell, and war photojournalist Robert Capa all reporting and studying the Spanish Civil War in detail. The Spanish Civil War was also known for the torture and killing of prisoners of war by both warring sides, and civilians other than soldiers often killed each other because of their religious beliefs. In April 1939, the Spanish National Army was victorious, the Second Spanish Republic was dissolved, all right-wing organizations were merged, and Francisco Franco implemented a dictatorship.

Quest Mission: Battle of Madrid, as the commander of the 3rd Brigade of the Comintern International International Column, lead the army to hold on to Madrid, and the number of troops in this quest must not exceed 5,000. Clearance reward: Two system gold coins × the number of days of defense, but at least not less than half a month.

Ouyang Yu felt that it was relatively simple after reading the introduction of the dungeon, only limiting the number of people and not limiting the equipment, so she planned to form a heavy armored brigade of 4,000 people to clear the dungeon, and a thousand people to form two fighter wings (including reserve pilots and ground crews), she had already seen the role of the Air Force on the battlefield, and she didn't want to lose air supremacy.

After careful preparations, Ouyang Yu's heavy armored brigade was formed, and then at midnight one day, he turned into white light and disappeared into another world.

At five o'clock in the morning on November 14, 1936, the suburbs of Madrid, the capital of Spain, were shrouded in a large area of dense fog, and a convoy with no end in sight was quickly driving towards Madrid in the dense fog.

Ouyang Yu and all the soldiers were forced to change into the military uniforms of the Spanish Republic, and the tanks and vehicles were also painted with the emblem of the Republic.

Because of the systematic arrangement, Ouyang Yu's army smoothly marched into the area controlled by the Republic of Madrid, and the commander of the Republican Army, General J. Miaha, personally responded and invited Ouyang Yu into his headquarters.

"Thank you to the Comintern, to Comrade Stalin, Comrade Ouyang, your armored brigade has come at the right time, the current situation is very bad, the rebels, with the help of the German-Italian intervention army, have occupied the Park of the Pastoral House, forcibly crossed the Manzanares River, and within a week occupied three-quarters of the university town. ”

General Miaha pulled Ouyang Yu to the big map to introduce her to the current situation, Ouyang Yu looked at the map and listened carefully, and was silently analyzing the battle situation in her heart, and after General Miaha finished the introduction, she said: "Comrade General, please give an order, my soldiers and I can't wait to fight the lackeys of capitalism." ”

"Good to be a staunch communist fighter, the sky will be bright in two hours, and I need your troops to attack here. General Miaha pointed to the location of the university town marked on the map and said: "This 3,000-strong German intervention army stationed here, their combat effectiveness is the strongest and the greatest threat to our army, I need to drive them out of here, and then push the defense line forward, is there a problem?"

Ouyang Yuli replied loudly: "There is no problem!"

"It's good to go down and prepare. General Miaha smiled encouragingly.

"Yes!" Ouyang Yu saluted and turned around and left the headquarters.