battalion has definitions from the field of military
1
[ noun ] (military) an army unit usually consisting of a headquarters and three or more companies

Used in print

(Booton Herndon, "From Custer to Korea, The 7th Cavalry"...)

For_example , it was a battalion of the 7_th_Cavalry under Colonel_George_Armstrong_Custer that had been wiped_out at the Battle_of_The_Little_Big_Horn .

2
[ noun ] a large indefinite number

Examples

"a battalion of ants" "a multitude of TV antennas" "a plurality of religions"

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