One is a sales executive who serves as a combat medic when he reports for his annual in-camp training (ICT). Yet he wonders if a four-day course on performing cardiopulmonary resuscitation and setting up intravenous drips, among other areas covered, is ample refresher training should the need to save the lives of fellow soldiers arise.

Another is a business undergraduate who returned for his ICT last year, after three years away from the Bionix armoured vehicle that he commands.