How many tanks in a US tank battalion?

The "tank battalion" is no more. In the new modular heavy division (which contains three minidivisions called Brigade Combat Teams), there are two Combined Arms Battalions per BCT. Each CAB contains two mechanized infantry companies running M-2 Bradley Infantry Fighting Vehicles and two Armor companies running M-1 Abrams tanks. Each armor company has fourteen tanks in it...so, a Combined Arms Battalion contains 28 tanks.