According to the size of the ancient army, hundreds of people can be prepared in a short time, but many people are not necessarily. Yongle conquered Vietnam in the Ming Dynasty with 200,000 soldiers. It took half a year to start from Guangdong and Guangxi. The long time is mainly the time to assemble troops. After all, there was no high speed in ancient times, and it took time to mobilize troops from all over the country.

The modern army takes our army as an example. The strategic duty troops arrived all over the country in one day. For example, the airborne troops 15 army in Zhengzhou, in which the airborne troops 13 division is a strategic duty unit, can be airlifted to all parts of the country in one day, while other troops are poor. Now the Air Force 13 is divided into six airborne brigades, which one is on duty is still unknown. Every military region of the Army has a strategic duty unit. If it is extremely full, you can leave within one day after receiving the order, and the train will reach the whole country within five days.

The us military is much more awesome. The 82nd Airborne Division in Europe and the local 10 1 Airborne Division can reach the whole world in one day! The army is slow to move. During the Gulf War, it took a week for the US Army's main 3rd Infantry Division to be transported from Fort Stewart, Georgia to Kuwait. In other countries, Russian airborne troops still have certain combat effectiveness, and France and Britain also have some airborne troops, but the scale is only battalion-level units, and peacekeeping is OK. Large legions have almost no fighting capacity.