battalion vs catena

battalion

• A great number of things. 

• Any large body of troops. 

• an army unit having two or more companies, etc. and a headquarters; forming part of a brigade. 

• An army unit having two or more companies, etc. and a headquarters. Traditionally forming part of a regiment. 

• To form into battalions. 

catena

• A series of related items. 

• A series of distinct soils arrayed along a slope.