Currently, the Regular Force comp<answer>one</answer>nt of the Army consists of three field-ready brigade groups: 1 Canadian Mechanized Brigade Group, at CFB Edmonton and CFB Shilo; 2 Canadian Mechanized Brigade Group, at CFB Petawawa and CFB Gagetown; and 5 Canadian Mechanized Brigade Group, at CFB Valcartier and Quebec City. Each contains <answer>one</answer> regiment each of artillery, armour, and combat engineers, three battalions of infantry (all scaled in the British fashion), <answer>one</answer> battalion for logistics, a squadron for headquarters/signals, and several smaller support organizations. A tactical helicopter squadron and a field ambulance are co-located with each brigade, but do not form part of the brigade's command structure.
Each Brigade contains how many regiments?
one