Answer:
In WWII the German were smart for strategies they had various railroads that`s how they would move all they heavy equipment like the panzer divisions. If it was through ground they would immediately get bombed by air raids. so having many railroads systems is a smart and advantage way to transport all type of equipment. If one railroad is down you have like 10 more available and trains can take weapons on board as well like anti aircraft guns and even deadly weapons. plus trains can be strong and fast for these jobs trusting to get their on time with out getting spotted.
Explanation: