Against the Zerg who mainly engage in hand-to-hand combat, the most suitable fortification should be the higher and thicker the city wall, the better. It is a pity that human beings still chose the ditch due to habitual thinking, so they were slaughtered.
By the way, the U.S. military bases in the anti-terrorism war have not adopted tall city walls, and they have suffered a lot in the confrontation with terrorists and guerrillas.
ps: In the age of cold weapons, whether it is China or foreign countries, city walls are the main fortifications (the popular castles in foreign countries can be regarded as city walls with very short perimeter). Later, with the rise of firearms, the huge power of the explosion made the city walls mainly made of bricks and other rigid materials vulnerable to the attack of cannons. A typical example is the case of the Ottoman Empire conquering Constantinople, the capital of the Eastern Roman Empire in 1451. The walls of Constantinople stood for thousands of years, but they collapsed quickly under the fire of artillery.
In order to deal with the threat of artillery, the city wall was first lowered in height (not easy to aim), and secondly, the slope to the outside was slowed down and a large amount of earth was used as a building material. Compared with masonry, soil has poor mechanical properties, but under the impact of explosion, the soil itself can absorb a lot of energy, while the masonry will shatter, resulting in the failure of the fortifications. Slowly the walls became trenches (foxholes).
In the movie, the Zerg have weapons that can fight low-Earth orbit, but they rarely see artillery-like weapons in ground combat. Therefore, in fact, it has always been cold weapons. In response to such an opponent, humans should build fortifications and fight against the Zerg with deep trenches and high bases.
[Of course, in the novel, the Zerg has a more imba burrowing ability than in the movie, which can quickly destroy the continuous city wall, so humans may have to consider using a decentralized fortress system instead of the continuous city wall. 】
pss: Modern military bases have inherited the construction idea of fortifications, and deep trenches and high fortresses are rarely seen. This is reasonable if it is against an established army. But if it is against guerrillas or terrorists who lack heavy firepower, I think deep groove and high base are more effective.
View more about Starship Troopers reviews
