2223
They are differentiated from APCs - which are purely " troop-transport " vehicles armed only for self-defense - because they are designed to give direct fire support to the dismounted infantry and so usually have significantly enhanced armament .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None