Normally regiments are commanded by a lieutenant-colonel and consist of a headquarters staff and headquarters company with an administrative and logistical element directed by a small regular force support staff. The regiment's subordinate units consist of one training company that may include a platoon devoted to inducting recruits and another platoon conducting recruit training. The Training Company provides candidates for basic courses run at the brigade's Battle School and combat arms training conducted at the Divisional Training Centre. Once the soldiers are trade-qualified, they return to their units to serve in the line company (or operational sub-unit) that is ready and equipped to deploy when called to do so. Each unit will usually deploy a reduced company of two platoons, one of these usually consisting of younger soldiers who have just passed through qualification training. The line company may be rounded out with a third platoon that is involved with retention duties such as refresher training of mature soldiers (this was once known as warrior training) and holding the non-effective strength, with the goal of returning troops back into the line.